/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is normally only called when
* there is known to be some data waiting to be read from the keyboard.
*/
void GsCheckKeyboardEvent(void)
{
unsigned char ch; /* latest character */
MODIFIER modifiers; /* latest modifiers */
int keystatus; /* latest keyboard status */
/* Read the latest keyboard status: */
keystatus = GdReadKeyboard(&ch, &modifiers);
if(keystatus < 0) {
if(keystatus == -2) /* special case for ESC pressed*/
GsTerminate();
GsError(GR_ERROR_KEYBOARD_ERROR, 0);
return;
} else if(keystatus) /* Deliver events as appropriate: */
GsDeliverKeyboardEvent(GR_EVENT_TYPE_KEY_DOWN, ch, modifiers);
}
/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is normally only called when
* there is known to be some data waiting to be read from the keyboard.
*/
GR_BOOL GsCheckKeyboardEvent(void)
{
MWKEY mwkey; /* latest character */
MWKEYMOD modifiers; /* latest modifiers */
MWSCANCODE scancode;
int keystatus; /* latest keyboard status */
/* Read the latest keyboard status: */
keystatus = GdReadKeyboard(&mwkey, &modifiers, &scancode);
if(keystatus < 0) {
if(keystatus == -2) /* special case return code*/
GsTerminate();
GsError(GR_ERROR_KEYBOARD_ERROR, 0);
return FALSE;
} else if(keystatus) { /* Deliver events as appropriate: */
switch (mwkey) {
case MWKEY_QUIT:
GsTerminate();
/* no return*/
case MWKEY_REDRAW:
GsRedrawScreen();
break;
case MWKEY_PRINT:
if (keystatus == 1)
GdCaptureScreen("screen.bmp");
break;
}
GsDeliverKeyboardEvent(0,
(keystatus==1?
GR_EVENT_TYPE_KEY_DOWN: GR_EVENT_TYPE_KEY_UP),
mwkey, modifiers, scancode);
return TRUE;
}
return FALSE;
}
