My application has a function that creates an offscreen window, draws a
bitmap, and then copies a rect from that window to the active window.
it works fine on all ROM's, except for the IIIc. I do not have an actuall
IIIc to try it out with.
the error I get is "just read directly from low memory"
and when I hit the debug button, it jumps to the WinDeleteWindow call.
any ideas why this would happen only on the IIIc? something to do with
the screen having more bits?
void DrawBitmap(UInt16 bitmapID, Int16 x, Int16 y)
{
VoidHand bitmapH = DmGetResource(bitmapRsc, bitmapID);
WinHandle window1; //offscreen windowarea
WinHandle window2 = WinGetActiveWindow(); //display window
UInt16 error = 0;
RectangleType rect;
//create offscreen window
window1 = WinCreateOffscreenWindow(320,372, genericFormat,&error);
//set current draw window to new offscreen window
WinSetActiveWindow (window1);
WinSetDrawWindow (window1);
//draw bitmap onto new offscreen window
if(bitmapH) {
BitmapType *bitmap;
//lock the bitmap handle to retrieve the pointer
bitmap = (BitmapPtr)MemHandleLock(bitmapH);
//release bitmap resource
DmReleaseResource(bitmapH);
WinDrawBitmap(bitmap, 0, 0);
}
//src rect
rect.topLeft.x = x;
rect.topLeft.y = y;
rect.extent.x = 158;
rect.extent.y = 125;
WinCopyRectangle(window1, window2, &rect, 1, 16, winPaint);
WinSetActiveWindow (window2);
WinSetDrawWindow (window2);
//free up window from memory
WinDeleteWindow(window1,true);
}
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