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TGDEMO99.FRM
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Visual Basic Form
|
1994-01-25
|
12KB
|
162 lines
Demo99
TrueGrid Chess!
Form15
Table1
TgDemo
WhitePiece
wwwwwwwwwwp
wwwwwwwwwwp
WhitePiece
wwwwwwwwwwp
wwwwwwwwwwp
WhitePiece
wwwwwwwwwwp
wwwwwwwwwwp
WhitePiece
wwwwwwwwwwp
wwwwwwwwwwp
WhitePiece
wwwwwwwwwwp
wwwwwwwwwwp
WhitePiece
wwwwwwwwwwp
wwwwwwwwwwp
BlackPiece
wwwwwwwwwwp
wwwwwwwwwwp
BlackPiece
wwwwwwwwwwp
wwwwwwwwwwp
wwwwww
wwwwww
BlackPiece
wwwwwwwwwwp
wwwwwwwwwwp
wpwwp
BlackPiece
wwwwwwwwwwp
wwwwwwwwwwp
BlackPiece
wwwwwwwwwwp
wwwwwwwwwwp
wwwwwp
BlackPiece
wwwwwwwwwwp
wwwwwwwwwwp
wwwwwp
wwwwww
ppwppw
@ Form_Loadq
Pieces
QUEEN
BISHOP
KNIGHT
ROOK}
Table1_Click>
Table1_Fetchk
Value
Table1
Picture
WhitePieceN
BlackPiece
Table1_FetchAttributes
StatusS
Splitv
FgColor
BgColor0
FontStyleF
DK_BLUE'
ColumnCellAttrs
Table1_DragCellj
dragRow
dragColw
MarqueeStyle`
GMQ_HIGHCELL
DRAG_BEGIN
BEGIN_DRAGV
Table1_DragOver"
Source
Control
State
LEAVE
GMQ_NONE
ENTER
PointX
PointY
dragToRow
RowAtPoint
dragToCol
ColumnAtPoint
Table1_DragDrop
dragToCell6
RefreshColZ
RefreshColumn
RowIndex
ColumnIndexP
dragging
WhitePiece_Click
Index|
SendMessagem
wParam
lParam
GRM_REFRESHCELL
RefreshCell
TgDemo
ignore
subIf
Form_Unload
Cancel
QuitCurrentDemoB
Pieces contains the piece index numbers. 0 if empty square.R
i% is used as a work variable
Information about pieces in transit
Piece indices: must match Index of WhitePiece and
BlackPiece controls
These two definitions are used by the RefreshCell routine.
Form_Load
Fixed number of rows ... 8n
Set all columns so that cell colors are queried
each time they are needed.l
*** Set up the chess board ***o
First, position the pawns.
Position the black pieces
Position the white pieces.
Form_Unload
RefreshCell
This is a "trick" to refresh a cell within TrueGrid. It uses
an undocumented TrueGrid message (I thought this was OK since
this is one of the more frivolous demos). However, thiss
technique will work with all versions of TrueGrid tot
refresh only the specified cell.s
Table1_DragCell
Only start dragging if there is a piece at this
location.
Set drag parameters so other events know we'res
dragging.
Start drag
Table1_DragDrop
Drop only if there's a valid cell under the cursor.
Overwrite the current piece with the new piece.
Clear the old piece if we didn't drop on top of
ourselves.o
Refresh the old and new cells so that Fetch isf
call to redisplay them.
Table1_DragOver
When dragging, we always update the dragToRow and
dragToCol so other events know where we are.w
reentry ... turn dragging on againr
exiting while dragging ... suspend drag
calculate the cell which the cursor isg
now pointing to.l
Refresh the old current cell and the new
current cell to change the highlighting.
Table1_Fetch
Fetch a piece. Pieces contains the index into
an array of pictures (WhitePiece/BlackPiece) that
contain the actual pictures of the pieces.e
Postive values are white, negatives are black.h
Table1_FetchAttributes
If dragging, then always highlight the currenth
cell by letting the background color show through.
This code sets BgColor to obtain a checkerboard effect.