--- Nicholas Pleis wrote:
> On 4 bit greyscale devices, it seems like
> WinDrawChars (and its cousin WinPaintChars)
> do not render properly when the draw window
> is set to something beside the screen:
>
> WinSetDrawWindow(someValidHandle);
>
> WinDrawChars("Test",4, 15, 15);
>
> When I do this, nothing shows up.
Nothing shows up where? How are you looking at the
window you drew on? How can we be sure
someValidHandle is a valid WindowHandle?
Here's some (bad, but working) code that demonstrates
how to change the draw window:
BitmapType *bmpP;
WinHandle bitmapWin, screenWin;
Err error;
RectangleType srcRect = {0,0,160,160};
bmpP = BmpCreate(160, 160, 8, NULL, &error);
if (bmpP)
{
bitmapWin = WinCreateBitmapWindow(bmpP, &error);
if (bitmapWin)
{
// save current draw window
screenWin = WinGetDrawWindow();
// change the draw window
WinSetDrawWindow(bitmapWin);
// draw something
WinDrawChars("Test", 4, 15, 15);
// restore the draw window
WinSetDrawWindow(screenWin);
// copy the entire bitmap to the screen
WinCopyRectangle (bitmapWin, screenWin,
&srcRect, 0, 0, winPaint);
}
}
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