How to tell key events of num key pressing down from main key area and num key area

Question

How to tell key events of num key pressing down from main key area and num key area in Win32 application?

Exactly the top num keys and those on right-hand side. I've used WM_CHAR to get key events but it fails to distinguish them. They actually have the same key values(?). Should I use other messages to receive events?

Answer 1

This test works for me : (test Beep if Numpad (0-9 and +/-))

	case WM_CHAR:
	{
		UINT nScanCode = LOBYTE(HIWORD(lParam));
		if (nScanCode >= 0x47 && nScanCode <= 0x52)
			Beep(6000, 10);
	}
	break;

Answer 2

Hi, @Rer
Welcome to Microsoft Q&A!

1. They don't have the same key values between main key area and num key area.
   You can see this documentation.
   The following table shows the symbolic constant names, hexadecimal values, and mouse or keyboard equivalents for the virtual-key codes used by the system. The codes are listed in numeric order.
2. If you want to obtain the virtual key code from a WM_CHAR message,
   please refer to this thread.

Thank you.

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