I also ran into this problem. It took a little digging, but I finally got
it to work. Perhaps someone at Palm could explain the behavior of the
Bitmap ID property of the Graphic PushButton item? I thought it would
handle the bitmap drawing for us. Inside Constructor, the bitmap appears,
but not at runtime. Is this a bug? I am using the latest 3.5 SDK on NT4
workstation.
I found that if you call CtlSetGraphics the bitmap is properly drawn.
Kirk
The following code is from a bogus project I created to test this issue:
static Boolean MainFormHandleEvent(EventPtr eventP)
{
Boolean handled = false;
FormPtr frmP;
switch (eventP->eType)
{
case menuEvent:
return MainFormDoCommand(eventP->data.menu.itemID);
case frmOpenEvent:
frmP = FrmGetActiveForm();
MainFormInit( frmP);
CtlSetGraphics(GetObjectPtr(MainCmd1PushButton),untitledBitmap4,NULL);
CtlSetGraphics(GetObjectPtr(MainCmd2PushButton),untitledBitmap3,NULL);
CtlSetGraphics(GetObjectPtr(MainCmd3PushButton),untitledBitmap2,NULL);
CtlSetGraphics(GetObjectPtr(MainCmd4PushButton),untitledBitmap,NULL);
FrmDrawForm ( frmP);
handled = true;
break;
default:
break;
}
return handled;
}
Stephen Bentley <[EMAIL PROTECTED]> wrote in message
news:9899@palm-dev-forum...
>
> I am using a Palm IIIc running Palm OS 3.5 and developing with the
> 3.5 SDK. Has anyone successfully done this?
>
> > This is my first attempt of using a graphic button.
> >
> > I don't understand why the button is blank until tapped THEN
> > I see the bitmap I defined for it. Once it responds to the tap,
> > it goes blank again.
> >
> > What am I doing wrong?
> >
> > Steve
> >
>
>
>
>
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