/*
* 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.
*/
BOOL
MwCheckKeyboardEvent(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 for ESC pressed*/
MwTerminate();
/*MwError(GR_ERROR_KEYBOARD_ERROR, 0);*/
return FALSE;
} else if(keystatus) { /* Deliver events as appropriate: */
switch (mwkey) {
case MWKEY_QUIT:
MwTerminate();
/* no return*/
case MWKEY_REDRAW:
MwRedrawScreen();
break;
case MWKEY_PRINT:
if (keystatus == 1)
GdCaptureScreen("screen.bmp");
break;
}
MwDeliverKeyboardEvent(mwkey, modifiers, scancode,
keystatus==1? TRUE: FALSE);
return TRUE;
}
return FALSE;
}
/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is only called when Poll() returns TRUE
* or MwSelect shows some data waiting to be read on the keyboard file descriptor.
*/
BOOL
MwCheckKeyboardEvent(void)
{
MWKEY mwkey; /* latest character */
MWKEYMOD modifiers; /* latest modifiers */
MWSCANCODE scancode;
int keystatus; /* latest keyboard status */
if (kbddev.Poll && (kbddev.Poll() == 0))
return FALSE;
/* Read the latest keyboard status*/
keystatus = GdReadKeyboard(&mwkey, &modifiers, &scancode);
if (keystatus <= 0)
{
if (keystatus == KBD_QUIT) /* special case for quit message*/
MwTerminate();
return FALSE; /* read failed or no new data*/
}
/* handle special keys*/
switch (mwkey)
{
case MWKEY_QUIT:
#if DEBUG
if (modifiers & MWKMOD_CTRL)
GdCaptureScreen(NULL, "screen.bmp");
else
#endif
MwTerminate();
break;
case MWKEY_REDRAW:
MwRedrawScreen();
break;
#if DEBUG
case MWKEY_PRINT:
if (keystatus == KBD_KEYPRESS)
GdCaptureScreen(NULL, "screen.bmp");
break;
#endif
}
/* Deliver keyboard events as appropriate*/
MwDeliverKeyboardEvent(mwkey, modifiers, scancode, keystatus == KBD_KEYPRESS? TRUE: FALSE);
return TRUE;
}