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CRT.i
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1991-04-06
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{
CRT.i for PCQ Pascal
These routines are a simple attempt to mimic the some of the
Turbo Pascal CRT routines. See ConsoleTest.p for an example of
using these.
Note that ConsoleSetPtr, the actual type returned by
AttachConsole, is not defined here. I wanted to implement it as sort
of an opaque type.
The source for these routines is under Runtime/Extras, in
CRT.p and CRT2.p.
}
{$I "Include:Intuition/Intuition.i"}
{
Initialize the CRT routines for a particular window. This routine
returns Nil if there is a problem, or a pointer to a record that
stores the important information the rest of the routines require.
AttachConsole must be called before any of the other routines.
}
Function AttachConsole(w : WindowPtr) : Address;
External;
{
Clear from the cursor position to the end of the line
}
Procedure ClrEOL(CRT : Address);
External;
{
Clear the text area of the window, and moves the cursor to 1,1
}
Procedure ClrScr(CRT : Address);
External;
{
Turn the console device's text cursor off. Note that this is not
the same as the mouse pointer.
}
Procedure CursOff(CRT : Address);
External;
{
Turn the text cursor on
}
Procedure CursOn(CRT : Address);
External;
{
Close the console device and free any memory allocated by the
AttachConsole call. Also, take care of any pending console IO.
This routine must be called before the program terminates, and
before the window is closed.
}
Procedure DetachConsole(CRT : Address);
External;
{
Move the text cursor to the specified column and row X,Y.
}
Procedure GotoXY(CRT : Address; x,y : Short);
External;
{
Insert a line at the current cursor position. The current line
and all those below it are moved down one.
}
Procedure InsLine(CRT : Address);
External;
{
Returns TRUE if there is a key waiting at the console
}
Function KeyPressed(CRT : Address) : Boolean;
External;
{
Return the maximum character column for the window
}
Function MaxX(CRT : Address) : Short;
External;
{
Return the maximum character row for the window
}
Function MaxY(CRT : Address) : Short;
External;
{
Wait for a key to be pressed, and return it. CRT is a pointer to
the CRT record returned by AttachConsole. Note that the key will
not automatically be displayed - you'll have to call WriteString
or something.
}
Function ReadKey(CRT : Address) : Char;
External;
{
Set the foreground (text) pen number. The actual color displayed
depends on the color map in use for the screen, so you'll have
to use SetRGB4 calls (or the equivalent) to get particular values.
}
Procedure TextColor(CRT : Address; t : Byte);
External;
{
Set the background color for the text.
}
Procedure TextBackground(CRT : Address; t : Byte);
External;
{
Return the current text cursor column
}
Function WhereX(CRT : Address) : Short;
External;
{
Return the current text cursor row
}
Function WhereY(CRT : Address) : Short;
External;
{
Write a string to the window through the console device. The
string can contain ANSI codes to change the pen colors, move
the cursor, just about anything.
}
Procedure WriteString(CRT : Address; Str : String);
External;