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TABLE OF CONTENTS
gadtools.library/CreateContext
gadtools.library/CreateGadgetA
gadtools.library/CreateMenusA
gadtools.library/DrawBevelBoxA
gadtools.library/FreeGadgets
gadtools.library/FreeMenus
gadtools.library/FreeVisualInfo
gadtools.library/GetVisualInfoA
gadtools.library/GT_BeginRefresh
gadtools.library/GT_EndRefresh
gadtools.library/GT_FilterIMsg
gadtools.library/GT_GetIMsg
gadtools.library/GT_PostFilterIMsg
gadtools.library/GT_RefreshWindow
gadtools.library/GT_ReplyIMsg
gadtools.library/GT_SetGadgetAttrsA
gadtools.library/LayoutMenuItemsA
gadtools.library/LayoutMenusA
gadtools.library/CreateContext gadtools.library/CreateContext
NAME
CreateContext -- Create a place for GadTools context data. (V36)
SYNOPSIS
gad = CreateContext(glistpointer);
D0 A0
struct Gadget *CreateContext(struct Gadget **);
FUNCTION
Creates a place for GadTools to store any context data it might
need for your window. In reality, an unselectable invisible
gadget is created, with room for the context data.
This function also establishes the linkage from a glist type
pointer to the individual gadget pointers. Call this function
before any of the other gadget creation calls.
INPUTS
glistptr - Address of a pointer to a Gadget, which was previously
set to NULL. When all the gadget creation is done, you may
use that pointer as your NewWindow.FirstGadget, or
in intuition.library/AddGList(), intuition.library/RefreshGList(),
FreeGadgets(), etc.
RESULT
gad - Pointer to context gadget, or NULL if failure.
EXAMPLE
struct Gadget *gad;
struct Gadget *glist = NULL;
gad = CreateContext(&glist);
/* Other creation calls go here */
if (gad)
{
myNewWindow.FirstGadget = glist;
if ( myWindow = OpenWindow(&myNewWindow) )
{
GT_RefreshWindow(win);
/* other stuff */
CloseWindow(myWindow);
}
}
FreeGadgets(glist);
NOTES
BUGS
SEE ALSO
gadtools.library/CreateGadgetA gadtools.library/CreateGadgetA
NAME
CreateGadgetA -- Allocate and initialize a gadtools gadget. (V36)
CreateGadget -- Varargs stub for CreateGadgetA(). (V36)
SYNOPSIS
gad = CreateGadgetA(kind, previous, newgad, taglist)
D0 D0 A0 A1 A2
struct Gadget *CreateGadgetA(ULONG, struct Gadget *,
struct NewGadget *, struct TagItem *);
gad = CreateGadget(kind, previous, newgad, firsttag, ...)
struct Gadget *CreateGadget(ULONG, struct Gadget *,
struct NewGadget *, Tag, ...);
FUNCTION
CreateGadgetA() allocates and initializes a new gadget of the
specified kind, and attaches it to the previous gadget. The
gadget is created based on the supplied kind, NewGadget structure,
and tags.
INPUTS
kind - to indicate what kind of gadget is to be created.
previous - pointer to the previous gadget that this new gadget
is to be attached to.
newgad - a filled in NewGadget structure describing the desired
gadget's size, position, label, etc.
taglist - pointer to a TagItem list.
TAGS
All kinds:
GT_Underscore (GadTools V37 and higher only).
Indicates the symbol that precedes the character in the gadget
label to be underscored. This would be to indicate keyboard
equivalents for gadgets (note that GadTools does not process
the keys - it just displays the underscore).
Example: To underscore the "M" in "Mode"...
ng.ng_GadgetText = "_Mode:";
gad = CreateGadget(..._KIND, &ng, prev,
GT_Underscore, '_',
...
);
BUTTON_KIND (action buttons):
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
CHECKBOX_KIND (on/off items):
GTCB_Checked (BOOL) - Initial state of checkbox, defaults to FALSE.
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
CYCLE_KIND (multiple state selections):
GTCY_Labels (STRPTR *) - Pointer to NULL-terminated array of strings
that are the choices offered by the cycle gadget (required).
GTCY_Active (UWORD) - The ordinal number (counting from zero) of
the initially active choice of a cycle gadget (defaults to zero).
GA_Disabled (BOOL) - (GadTools V37 and higher only)
Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
INTEGER_KIND (numeric entry):
GTIN_Number (ULONG) - The initial contents of the integer gadget
(default zero).
GTIN_MaxChars (UWORD) - The maximum number of digits that the
integer gadget is to hold (defaults to 10).
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
STRINGA_ExitHelp (BOOL) - (New for V37) Set to TRUE to have the
help-key cause an exit from the integer gadget. You will
then receive a GADGETUP with code = 0x5F (rawkey for help).
GA_TabCycle (BOOL) - (New for V37) Set to TRUE so that pressing
<TAB> or <Shift-TAB> will activate the next or previous
such gadget. (defaults to TRUE, unlike regular Intuition string
gadgets, which default to FALSE).
GTST_EditHook (struct Hook *) - (new for V37) Hook to use as a custom
integer gadget edit hook (StringExtend->EditHook) for this gadget.
GadTools will allocate the StringExtend->WorkBuffer for you.
Defaults to NULL.
STRINGA_Justification - (new for V37) Controls the justification of
the contents of an integer gadget. Choose one of STRINGLEFT,
STRINGRIGHT, or STRINGCENTER. (Defaults to STRINGLEFT).
STRINGA_ReplaceMode (BOOL) - (new for V37) If TRUE, this integer gadget
is in replace-mode. Defaults to FALSE (insert-mode).
LISTVIEW_KIND (scrolling list):
GTLV_Top (WORD) - Top item visible in the listview. This value
will be made reasonable if out-of-range (defaults to zero).
GTLV_Labels (struct List *) - List of labels whose ln_Name fields
are to be displayed in the listview.
GTLV_ReadOnly (BOOL) - If TRUE, then listview is read-only.
GTLV_ScrollWidth (UWORD) - Width of scroll bar for listview.
Must be greater than zero (defaults to 16).
GTLV_ShowSelected (struct Gadget *) - NULL to have the currently
selected item displayed beneath the listview, or pointer to
an already-created GadTools STRING_KIND gadget to have an
editable display of the currently selected item.
GTLV_Selected (UWORD) - Ordinal number of currently selected
item, or ~0 to have no current selection (defaults to ~0).
LAYOUTA_Spacing - Extra space to place between lines of listview
(defaults to zero).
MX_KIND (mutually exclusive, radio buttons):
GTMX_Labels (STRPTR *) - Pointer to a NULL-terminated array of
strings which are to be the labels beside each choice in a
set of mutually exclusive gadgets.
GTMX_Active (UWORD) - The ordinal number (counting from zero) of
the initially active choice of an mx gadget (Defaults to zero).
GTMX_Spacing (UWORD) - The amount of space between each choice
of a set of mutually exclusive gadgets. This amount is added
to the font height to produce the vertical shift between
choices. (defaults to one).
LAYOUTA_Spacing - FOR COMPATIBILITY ONLY. Use GTMX_Spacing instead.
The number of extra pixels to insert between
each choice of a mutually exclusive gadget. This is added
to the present gadget image height (9) to produce the
true spacing between choices. (defaults to
FontHeight-8, which is zero for 8-point font users).
NUMBER_KIND (read-only numeric):
GTNM_Number - A signed long integer to be displayed as a read-only
number (default 0).
GTNM_Border (BOOL) - If TRUE, this flag asks for a recessed
border to be placed around the gadget.
PALETTE_KIND (color selection):
GTPA_Depth (UWORD) - Number of bitplanes in the palette
(defaults to 1).
GTPA_Color (UBYTE) - Initially selected color of the palette
(defaults to 1).
GTPA_ColorOffset (UBYTE) - First color to use in palette
(defaults to zero).
GTPA_IndicatorWidth (UWORD) - The desired width of the current-color
indicator, if you want one to the left of the palette.
GTPA_IndicatorHeight (UWORD) - The desired height of the current-color
indicator, if you want one above the palette.
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
SCROLLER_KIND (for scrolling through areas or lists):
GTSC_Top (WORD) - Top visible in area scroller represents
(defaults to zero).
GTSC_Total (WORD) - Total in area scroller represents
(defaults to zero).
GTSC_Visible (WORD) - Number visible in scroller (defaults to 2).
GTSC_Arrows (UWORD) - Asks for arrows to be attached to the scroller.
The value supplied will be taken as the width of each arrow button
for a horizontal scroller, or the height of each button for a
vertical scroller (the other dimension will match the whole
scroller).
PGA_Freedom - Whether scroller is horizontal or vertical.
Choose LORIENT_VERT or LORIENT_HORIZ (defaults to horiz).
GA_Immediate (BOOL) - Hear every IDCMP_GADGETDOWN event from scroller
(defaults to FALSE).
GA_RelVerify (BOOL) - Hear every IDCMP_GADGETUP event from scroller
(defaults to FALSE).
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
SLIDER_KIND (to indicate level or intensity):
GTSL_Min (WORD) - Minimum level for slider (default 0).
GTSL_Max (WORD) - Maximum level for slider (default 15).
GTSL_Level (WORD) - Current level of slider (default 0).
GTSL_MaxLevelLen (UWORD) - Max. length in characters of level string
when rendered beside slider.
GTSL_LevelFormat (STRPTR) - C-Style formatting string for slider
level. Be sure to use the 'l' (long) modifier. This string
is processed using exec/RawDoFmt(), so refer to that function
for details.
GTSL_LevelPlace - One of PLACETEXT_LEFT, PLACETEXT_RIGHT,
PLACETEXT_ABOVE, or PLACETEXT_BELOW, indicating where the level
indicator is to go relative to slider (default to PLACETEXT_LEFT).
GTSL_DispFunc ( LONG (*function)(struct Gadget *, WORD) ) - Function
to calculate level to be displayed. A number-of-colors slider
might want to set the slider up to think depth, and have a
(1 << n) function here. Defaults to none. Your function must
take a pointer to gadget as the first parameter, the level
(a WORD) as the second, and return the result as a LONG.
GA_Immediate (BOOL) - If you want to hear each slider IDCMP_GADGETDOWN
event.
GA_RelVerify (BOOL) - If you want to hear each slider IDCMP_GADGETUP
event.
PGA_Freedom - Set to LORIENT_VERT or LORIENT_HORIZ to have a
vertical or horizontal slider.
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
STRING_KIND (text-entry):
GTST_String (STRPTR) - The initial contents of the string gadget,
or NULL (default) if string is to start empty.
GTST_MaxChars (UWORD) - The maximum number of characters that the
string gadget is to hold.
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
STRINGA_ExitHelp (BOOL) - (New for V37) Set to TRUE to have the
help-key cause an exit from the string gadget. You will
then receive a GADGETUP with code = 0x5F (rawkey for help).
GA_TabCycle (BOOL) - (New for V37) Set to TRUE so that pressing
<TAB> or <Shift-TAB> will activate the next or previous
such gadget. (defaults to TRUE, unlike regular Intuition string
gadgets, which default to FALSE).
GTST_EditHook (struct Hook *) - (new for V37) Hook to use as a custom
string gadget edit hook (StringExtend->EditHook) for this gadget.
GadTools will allocate the StringExtend->WorkBuffer for you.
Defaults to NULL.
STRINGA_Justification - (new for V37) Controls the justification of
the contents of a string gadget. Choose one of STRINGLEFT,
STRINGRIGHT, or STRINGCENTER. (Defaults to STRINGLEFT).
STRINGA_ReplaceMode (BOOL) - (new for V37) If TRUE, this string gadget
is in replace-mode. Defaults to FALSE (insert-mode).
TEXT_KIND (read-only text):
GTTX_Text - Pointer to a NULL terminated string to be displayed,
as a read-only text-display gadget, or NULL. defaults to NULL.
GTTX_CopyText (BOOL) - This flag instructs the text-display gadget
to copy the supplied text string, instead of using only
pointer to the string. This only works for the initial value
of GTTX_Text set at CreateGadget() time. If you subsequently
change GTTX_Text, the new text will be referenced by pointer,
not copied. Do not use this tag with a NULL GTTX_Text.
GTTX_Border (BOOL) - If TRUE, this flag asks for a recessed
border to be placed around the gadget.
RESULT
gad - pointer to the new gadget, or NULL if the allocation failed
or if previous was NULL.
EXAMPLE
NOTES
Note that the ng_VisualInfo and ng_TextAttr fields of the
NewGadget structure must be set to valid VisualInfo and
TextAttr pointers, or this function will fail.
Starting with V37, string and integer gadgets have the GFLG_TABCYCLE
feature automatically. If the user presses Tab or Shift-Tab while
in a string or integer gadget, the next or previous one in
sequence will be activated. You will hear a GADGETUP with a code
of 0x09. Use {GA_TabCycle, FALSE} to supress this.
BUGS
SEE ALSO
FreeGadgets(), GT_SetGadgetAttrs(), GetVisualInfo().
gadtools.library/CreateMenusA gadtools.library/CreateMenusA
NAME
CreateMenusA -- Allocate and fill out a menu structure. (V36)
CreateMenus -- Varargs stub for CreateMenus(). (V36)
SYNOPSIS
menu = CreateMenusA(newmenu, taglist)
D0 A0 A1
struct Menu *CreateMenusA(struct NewMenu *, struct TagItem *);
menu = CreateMenus(newmenu, firsttag, ...)
struct Menu *CreateMenus(struct NewMenu *, Tag, ...);
FUNCTION
CreateMenusA() allocates and initializes a complete menu
structure based on the supplied array of NewMenu structures.
Optionally, CreateMenusA() can allocate and initialize a complete
set of menu items and sub-items for a single menu title. This
is dictated by the contents of the array of NewMenus.
INPUTS
newmenu - Pointer to an array of initialized struct NewMenus.
taglist - Pointer to a TagItem list.
TAGS
GTMN_FrontPen (UBYTE) - Pen number to be used for menu text.
(defaults to zero).
GTMN_FullMenu (BOOL) - (GadTools V37 and higher only)
Requires that the NewMenu specification describes a complete
menu strip, not a fragment. If a fragment is found,
CreateMenusA() will fail with a secondary error of
GTMENU_INVALID. (defaults to FALSE).
GTMN_SecondaryError (ULONG *) - (GadTools V37 and higher only)
Supply a pointer to a NULL-initialized ULONG to receive a
descriptive error code. Possible values:
GTMENU_INVALID - NewMenu structure describes an illegal
menu. (CreateMenusA() will fail with a NULL result).
GTMENU_TRIMMED - NewMenu structure has too many menus, items,
or subitems (CreateMenusA() will succeed, returning a
trimmed-down menu structure).
GTMENU_NOMEM - CreateMenusA() ran out of memory.
RESULT
menu - Pointer to the resulting initialized menu structure (or
the resulting FirstItem), with all the links for menu items
and subitems in place.
The result will be NULL if CreateMenusA() could not allocate
memory for the menus, or if the NewMenu array had an
illegal arrangement (eg. NM_SUB following NM_TITLE).
(see also the GTMN_SecondaryError tag above).
EXAMPLE
NOTES
The strings you supply for menu text are not copied, and must
be preserved for the life of the menu.
The resulting menus have no positional information. You will
want to call LayoutMenusA() (or LayoutMenuItemsA()) to supply that.
CreateMenusA() automatically provides you with a UserData field
for each menu, menu-item or sub-item. Use the GTMENU_USERDATA(menu)
or GTMENUITEM_USERDATA(menuitem) macro to access it.
BUGS
At present, if you put images into menus using IM_ITEM
or IM_SUB for a NewMenu->Type, the image you supply must
be an ordinary struct Image. You may not use a 'custom
image' (eg. one obtained from a boopsi image-class).
SEE ALSO
LayoutMenusA(), FreeMenus(), gadtools.h/GTMENU_USERDATA(),
gadtools.h/GTMENUITEM_USERDATA()
gadtools.library/DrawBevelBoxA gadtools.library/DrawBevelBoxA
NAME
DrawBevelBoxA -- Draws a bevelled box. (V36)
DrawBevelBox -- Varargs stub for DrawBevelBox(). (V36)
SYNOPSIS
DrawBevelBoxA(rport, left, top, width, height, taglist)
A0 D0 D1 D2 D3 A1
VOID DrawBevelBoxA(struct RastPort *, WORD, WORD, WORD, WORD,
struct TagItem *taglist);
DrawBevelBox(rport, left, top, width, height, firsttag, ...)
VOID DrawBevelBox(struct RastPort *, WORD, WORD, WORD, WORD,
Tag, ...);
FUNCTION
DrawBevelBoxA() renders a bevelled box of specified dimensions
into the supplied RastPort.
INPUTS
rport - The RastPort into which the box is to be drawn.
left - The left edge of the box.
top - The top edge of the box.
width - The width of the box.
height - The height of the box.
taglist - Pointer to a TagItem list.
TAGS
GTBB_Recessed (BOOL): Set to anything for a recessed-looking box.
If absent, the box defaults, it would be raised.
GT_VisualInfo (APTR): You MUST supply the value you obtained
from an earlier call to GetVisualInfoA().
RESULT
None.
EXAMPLE
NOTES
DrawBevelBox() is a rendering operation, not a gadget. That
means you must refresh it at the appropriate time, like any
other rendering operation.
BUGS
SEE ALSO
GetVisualInfoA()
gadtools.library/FreeGadgets gadtools.library/FreeGadgets
NAME
FreeGadgets -- Free a linked list of gadgets. (V36)
SYNOPSIS
FreeGadgets(glist)
A0
VOID FreeGadgets(struct Gadget *glist);
A0
FUNCTION
Frees any GadTools gadgets found on the linked list of gadgets
beginning with the specified one. Frees all the memory that was
allocated by CreateGadgetA(). This function will return safely
with no action if it receives a NULL parameter.
INPUTS
glist - pointer to first gadget in list to be freed.
RESULT
none
EXAMPLE
NOTES
BUGS
SEE ALSO
CreateGadgetA()
gadtools.library/FreeMenus gadtools.library/FreeMenus
NAME
FreeMenus -- Frees memory allocated by CreateMenusA(). (V36)
SYNOPSIS
FreeMenus(menu)
A0
VOID FreeMenus(struct Menu *);
FUNCTION
Frees the menus allocated by CreateMenusA(). It is safe to
call this function with a NULL parameter.
INPUTS
menu - Pointer to menu structure (or first MenuItem) obtained
from CreateMenusA().
RESULT
None.
EXAMPLE
NOTES
BUGS
SEE ALSO
CreateMenusA()
gadtools.library/FreeVisualInfo gadtools.library/FreeVisualInfo
NAME
FreeVisualInfo -- Return any resources taken by GetVisualInfo. (V36)
SYNOPSIS
FreeVisualInfo(vi)
A0
VOID FreeVisualInfo(APTR);
FUNCTION
FreeVisualInfo() returns any memory or other resources that
were allocated by GetVisualInfoA(). You should only call this function
once you are done with using the gadgets (i.e. after CloseWindow()),
but while the screen is still valid (i.e. before CloseScreen() or
UnlockPubScreen()).
INPUTS
vi - Pointer that was obtained by calling GetVisualInfoA().
RESULT
None.
EXAMPLE
NOTES
BUGS
SEE ALSO
GetVisualInfoA()
gadtools.library/GetVisualInfoA gadtools.library/GetVisualInfoA
NAME
GetVisualInfoA -- Get information GadTools needs for visuals. (V36)
GetVisualInfo -- Varargs stub for GetVisualInfoA(). (V36)
SYNOPSIS
vi = GetVisualInfoA(screen, taglist)
D0 A0 A1
APTR vi = GetVisualInfoA(struct Screen *, struct TagItem *);
vi = GetVisualInfo(screen, firsttag, ...)
APTR vi = GetVisualInfo(struct Screen *, Tag, ...);
FUNCTION
Get a pointer to a (private) block of data containing various bits
of information that GadTools needs to ensure the best quality
visuals. Use the result in the NewGadget structure of any gadget
you create, or as a parameter to the various menu calls. Once the
gadgets/menus are no longer needed (after the last CloseWindow),
call FreeVisualInfo().
INPUTS
screen - Pointer to the screen you will be opening on.
taglist - Pointer to list of TagItems.
RESULT
vi - Pointer to private data.
EXAMPLE
NOTES
BUGS
SEE ALSO
FreeVisualInfo(), intuition/LockPubScreen(),
intuition/UnlockPubScreen()
gadtools.library/GT_BeginRefresh gadtools.library/GT_BeginRefresh
NAME
GT_BeginRefresh -- Begin refreshing friendly to GadTools. (V36)
SYNOPSIS
GT_BeginRefresh(win)
A0
VOID GT_BeginRefresh(struct Window *);
FUNCTION
Invokes the intuition.library/BeginRefresh() function in a manner
friendly to the Gadget Toolkit. This function call permits the
GadTools gadgets to refresh themselves at the correct time.
Call GT_EndRefresh() function when done.
INPUTS
win - Pointer to Window structure for which a IDCMP_REFRESHWINDOW
IDCMP event was received.
RESULT
None.
EXAMPLE
NOTES
The nature of GadTools precludes the use of the IDCMP flag
WFLG_NOCAREREFRESH. You must handle IDCMP_REFRESHWINDOW events
in at least the minimal way, namely:
case IDCMP_REFRESHWINDOW:
GT_BeginRefresh(win);
GT_EndRefresh(win, TRUE);
break;
BUGS
SEE ALSO
intuition.library/BeginRefresh()
gadtools.library/GT_EndRefresh gadtools.library/GT_EndRefresh
NAME
GT_EndRefresh -- End refreshing friendly to GadTools. (V36)
SYNOPSIS
GT_EndRefresh(win, complete)
A0 D0
VOID GT_EndRefresh(struct Window *, BOOL complete);
FUNCTION
Invokes the intuition.library/EndRefresh() function in a manner
friendly to the Gadget Toolkit. This function call permits
GadTools gadgets to refresh themselves at the correct time.
Call this function to EndRefresh() when you have used
GT_BeginRefresh().
INPUTS
win - Pointer to Window structure for which a IDCMP_REFRESHWINDOW
IDCMP event was received.
complete - TRUE when done with refreshing.
RESULT
None.
EXAMPLE
NOTES
BUGS
SEE ALSO
intuition.library/EndRefresh()
gadtools.library/GT_FilterIMsg gadtools.library/GT_FilterIMsg
NAME
GT_FilterIMsg -- Filter an IntuiMessage through GadTools. (V36)
SYNOPSIS
modimsg = GT_FilterIMsg(imsg)
D0 A1
struct IntuiMessage *GT_FilterIMsg(struct IntuiMessage *);
FUNCTION
NOTE WELL: Extremely few programs will actually need this function.
You almost certainly should be using GT_GetIMsg() and GT_ReplyIMsg()
only, and not GT_FilterIMsg() and GT_PostFilterIMsg().
GT_FilterIMsg() takes the supplied IntuiMessage and asks the
Gadget Toolkit to consider and possibly act on it. Returns
NULL if the message was only of significance to a GadTools gadget
(i.e. not to you), else returns a pointer to a modified IDCMP
message, which may contain additional information.
You should examine the Class, Code, and IAddress fields of
the returned message to learn what happened. Do not make
interpretations based on the original imsg.
You should use GT_PostFilterIMsg() to revert to the original
IntuiMessage once you are done with the modified one.
INPUTS
imsg - An IntuiMessage you obtained from a Window's UserPort.
RESULT
modimsg - A modified IntuiMessage, possibly with extra information
from GadTools, or NULL.
EXAMPLE
NOTES
BUGS
SEE ALSO
GT_GetIMsg(), GT_PostFilterIMsg()
gadtools.library/GT_GetIMsg gadtools.library/GT_GetIMsg
NAME
GT_GetIMsg -- Get an IntuiMessage, with GadTools processing. (V36)
SYNOPSIS
imsg = GT_GetIMsg(intuiport)
D0 A0
struct IntuiMessage *GT_GetIMsg(struct MsgPort *);
FUNCTION
Use GT_GetIMsg() in place of the usual exec.library/GetMsg() when
reading IntuiMessages from your window's UserPort. If needed,
the GadTools dispatcher will be invoked, and suitable processing
will be done for gadget actions. This function returns a pointer
to a modified IntuiMessage (which is a copy of the original,
possibly with some supplementary information from GadTools).
If there are no messages (or if the only messages are meaningful
only to GadTools, NULL will be returned.
INPUTS
intuiport - The Window->UserPort of a window that is using the
Gadget Toolkit.
RESULT
imsg - Pointer to modified IntuiMessage, or NULL if there are
no applicable messages.
EXAMPLE
NOTES
Be sure to use GT_ReplyIMsg() and not exec.library/ReplyMsg() on
messages obtained with GT_GetIMsg().
If you intend to do more with the resulting message than read
its fields, act on it, and reply it, you may find GT_FilterIMsg()
more appropriate.
BUGS
SEE ALSO
GT_ReplyIMsg(), GT_FilterIMsg()
gadtools.library/GT_PostFilterIMsg gadtools.library/GT_PostFilterIMsg
NAME
GT_PostFilterIMsg -- Return the unfiltered message after
GT_FilterIMsg() was called, and clean up. (V36)
SYNOPSIS
imsg = GT_PostFilterIMsg(modimsg)
D0 A1
struct IntuiMessage *GT_PostFilterIMsg(struct IntuiMessage *);
FUNCTION
NOTE WELL: Extremely few programs will actually need this function.
You almost certainly should be using GT_GetIMsg() and GT_ReplyIMsg()
only, and not GT_FilterIMsg() and GT_PostFilterIMsg().
Performs any clean-up necessitated by a previous call to
GT_FilterIMsg(). The original IntuiMessage is now yours to handle.
Do not interpret the fields of the original IntuiMessage, but
rather use only the one you got from GT_FilterIMsg(). You
may only do message related things at this point, such as queueing
it up or replying it. Since you got the message with
exec.library/GetMsg(), your responsibilities do include replying
it with exec.library/ReplyMsg(). This function may be safely
called with a NULL parameter.
INPUTS
modimsg - A modified IntuiMessage obtained with GT_FilterIMsg().
RESULT
imsg - A pointer to the original IntuiMessage, if GT_FilterIMsg()
returned non-NULL.
EXAMPLE
NOTES
Be sure to use exec.library/ReplyMsg() on the original IntuiMessage
you obtained with GetMsg(), (which is the what you passed to
GT_FilterIMsg()), and not on the parameter of this function.
BUGS
SEE ALSO
GT_FilterIMsg()
gadtools.library/GT_RefreshWindow gadtools.library/GT_RefreshWindow
NAME
GT_RefreshWindow -- Refresh all the GadTools gadgets. (V36)
SYNOPSIS
GT_RefreshWindow(win, req)
A0 A1
VOID GT_RefreshWindow(struct Window *, struct Requester *);
FUNCTION
Perform the initial refresh of all the GadTools gadgets you have
created. After you have opened your window, you must call this
function. Or, if you have opened your window without gadgets,
you add the gadgets with intuition.library/AddGList(),
refresh them using intuition.library/RefreshGList(), then call
this function.
You should not need this function at other times.
INPUTS
win - Pointer to the Window containing GadTools gadgets.
req - Pointer to requester, or NULL if not a requester (currently
ignored - use NULL).
RESULT
None.
EXAMPLE
NOTES
req must currently be NULL. GadTools gadgets are not supported
in requesters. This field may allow such support at a future date.
BUGS
SEE ALSO
GT_BeginRefresh()
gadtools.library/GT_ReplyIMsg gadtools.library/GT_ReplyIMsg
NAME
GT_ReplyIMsg -- Reply a message obtained with GT_GetIMsg(). (V36)
SYNOPSIS
GT_ReplyIMsg(imsg)
A1
VOID GT_ReplyIMsg(struct IntuiMessage *);
FUNCTION
Reply a modified IntuiMessage obtained with GT_GetIMsg().
If you use GT_GetIMsg(), use this function where you would normally
have used exec.library/ReplyMsg().
You may safely call this routine with a NULL pointer (nothing
will be done).
INPUTS
imsg - A modified IntuiMessage obtained with GT_GetIMsg().
RESULT
None.
EXAMPLE
NOTES
When using GadTools, you MUST explicitly GT_ReplyIMsg()
all messages you receive. You cannot depend on CloseWindow()
to handle messages you have not replied.
BUGS
SEE ALSO
GT_GetIMsg()
gadtools.library/GT_SetGadgetAttrsA gadtools.library/GT_SetGadgetAttrsA
NAME
GT_SetGadgetAttrsA -- Change the attributes of a GadTools gadget. (V36)
GT_SetGadgetAttrs -- Varargs stub for GT_SetGadgetAttrsA(). (V36)
SYNOPSIS
GT_SetGadgetAttrsA(gad, win, req, taglist)
A0 A1 A2 A3
VOID GT_SetGadgetAttrsA(struct Gadget *, struct Window *,
struct Requester *, struct TagItem *);
GT_SetGadgetAttrs(gad, win, req, firsttag, ...)
VOID GT_SetGadgetAttrs(struct Gadget *, struct Window *,
struct Requester *, Tag, ...);
FUNCTION
Change the attributes of the specified gadget, according to the
attributes chosen in the tag list.
INPUTS
gad - Pointer to the gadget in question.
win - Pointer to the window containing the gadget.
req - Pointer to the requester containing the gadget, or NULL if
not in a requester. (Not yet implemented, use NULL).
taglist - Pointer to TagItem list.
TAGS
BUTTON_KIND:
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
CHECKBOX_KIND:
GTCB_Checked (BOOL) - Initial state of checkbox, defaults to FALSE.
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
CYCLE_KIND:
GTCY_Active (UWORD) - The ordinal number (counting from zero) of
the active choice of a cycle gadget (defaults to zero).
GTCY_Labels (STRPTR *) - (GadTools V37 and higher only)
Pointer to NULL-terminated array of strings
that are the choices offered by the cycle gadget.
GA_Disabled (BOOL) - (GadTools V37 and higher only)
Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
INTEGER_KIND:
GTIN_Number (ULONG) - The initial contents of the integer gadget
(default zero).
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
LISTVIEW_KIND:
GTLV_Top (WORD) - Top item visible in the listview. This value
will be made reasonable if out-of-range (defaults to zero).
GTLV_Labels (struct List *) - List of labels whose ln_Name fields
are to be displayed in the listview. Use a value of ~0 to
"detach" your List from the display. You must detach your list
before modifying the List structure, since GadTools reserves
the right to traverse it on another task's schedule. When you
are done, attach the list by using the tag pair
{GTLV_Labels, list}.
GTLV_Selected (UWORD) - Ordinal number of currently selected
item (defaults to zero if GTLV_ShowSelected is set).
MX_KIND:
GTMX_Active (UWORD) - The ordinal number (counting from zero) of
the active choice of an mx gadget (Defaults to zero).
NUMBER_KIND:
GTNM_Number - A signed long integer to be displayed as a read-only
number (default 0).
PALETTE_KIND:
GTPA_Color (UBYTE) - Initially selected color of the palette
(defaults to 1).
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
SCROLLER_KIND:
GTSC_Top (WORD) - Top visible in scroller (defaults to zero).
GTSC_Total (WORD) - Total in scroller area (defaults to zero).
GTSC_Visible (WORD) - Number visible in scroller (defaults to 2).
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
SLIDER_KIND:
GTSL_Min (WORD) - Minimum level for slider (default 0).
GTSL_Max (WORD) - Maximum level for slider (default 15).
GTSL_Level (WORD) - Current level of slider (default 0).
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
STRING_KIND:
GTST_String (STRPTR) - The initial contents of the string gadget,
or NULL (default) if string is to start empty.
GA_Disabled (BOOL) - Set to TRUE to disable gadget, FALSE otherwise
(defaults to FALSE).
TEXT_KIND:
GTTX_Text - Pointer to a NULL terminated string to be displayed,
as a read-only text-display gadget, or NULL. defaults to NULL.
RESULT
None.
EXAMPLE
NOTES
req must currently be NULL. GadTools gadgets are not supported
in requesters. This field may allow such support at a future date.
This function may not be called inside of a GT_BeginRefresh() /
GT_EndRefresh() session. (As always, restrict yourself to simple
rendering functions).
BUGS
SEE ALSO
gadtools.library/LayoutMenuItemsA gadtools.library/LayoutMenuItemsA
NAME
LayoutMenuItemsA -- Position all the menu items. (V36)
LayoutMenuItems -- Varargs stub for LayoutMenuItemsA(). (V36)
SYNOPSIS
success = LayoutMenuItemsA(menuitem, vi, taglist)
D0 A0 A1 A2
BOOL LayoutMenuItemsA(struct MenuItem *, APTR, struct TagItem *);
success = LayoutMenuItems(menuitem, vi, firsttag, ...)
BOOL LayoutMenuItemsA(struct MenuItem *, APTR, Tag, ...);
FUNCTION
Lays out all the menu items and sub-items according to
the supplied visual information and tag parameters. You would use this
if you used CreateMenusA() to make a single menu-pane (with sub-items,
if any), instead of a whole menu strip.
This routine attempts to columnize and/or shift the MenuItems in
the event that a menu would be too tall or too wide.
INPUTS
menuitem - Pointer to first MenuItem in a linked list of
items.
vi - Pointer returned by GetVisualInfoA().
taglist - Pointer to a TagItem list.
TAGS
GTMN_TextAttr (struct TextAttr *) - Text Attribute to use for
menu-items and sub-items. If not supplied, the screen's
font will be used. This font must be openable via OpenFont()
when this function is called.
GTMN_Menu (struct Menu *) - Pointer to the Menu structure whose
FirstItem is the MenuItem supplied above. If the menu items are
such that they need to be columnized or shifted, the Menu
structure is needed to perform the complete calculation.
It is suggested you always provide this information.
RESULT
success - TRUE if successful, false otherwise (signifies that
the TextAttr wasn't openable).
EXAMPLE
NOTES
BUGS
If a menu ends up being wider than the whole screen, it will
run off the right-hand side.
SEE ALSO
CreateMenusA(), GetVisualInfoA()
gadtools.library/LayoutMenusA gadtools.library/LayoutMenusA
NAME
LayoutMenusA -- Position all the menus and menu items. (V36)
LayoutMenus -- Varargs stub for LayoutMenusA(). (V36)
SYNOPSIS
success = LayoutMenusA(menu, vi, taglist)
D0 A0 A1 A2
BOOL LayoutMenusA(struct Menu *, APTR, struct TagItem *);
success = LayoutMenus(menu, vi, firsttag, ...)
BOOL LayoutMenus(struct Menu *, APTR, Tag, ...);
FUNCTION
Lays out all the menus, menu items and sub-items in the supplied
menu according to the supplied visual information and tag parameters.
This routine attempts to columnize and/or shift the MenuItems in
the event that a menu would be too tall or too wide.
INPUTS
menu - Pointer to menu obtained from CreateMenusA().
vi - Pointer returned by GetVisualInfoA().
taglist - Pointer to a TagItem list.
TAGS
GTMN_TextAttr (struct TextAttr *) - Text Attribute to use for
menu-items and sub-items. If not supplied, the screen's
font will be used. This font must be openable via OpenFont()
when this function is called.
RESULT
success - TRUE if successful, false otherwise (signifies that
the TextAttr wasn't openable).
EXAMPLE
NOTES
When using this function, there is no need to also call
LayoutMenuItemsA().
BUGS
If a menu ends up being wider than the whole screen, it will
run off the right-hand side.
SEE ALSO
CreateMenusA(), GetVisualInfoA()