Help to catch Arrow key event under Windows 10

[cean]

Hi,

I am using OneAPI Fortran 2023.2.0 to write a Win32 program on Windows 10. Where could I catch the Arrow key event? I can catch normal keys under WM_KEYDOWN. But the code below doesn't work for Virtual Key like the Arrow Keys. 

Thanks for help.

Cheers,

Cean

integer function WndProc( hwnd, message, wParam, lParam )
    select case (message)
        case (WM_KEYDOWN) 
            wParam = and(wParam, #0000ffff)
	        select case (wParam) 
            case (VK_LEFT)
				!// Process the LEFT ARROW key. 
				ret = MessageBox (hwnd, "Left arrow is pressed"C, "Hi"C, MB_OK)
				return

			case (VK_RIGHT) 

[andrew_4619]

Do you have any PeekMessage calls within you message processing that are intercepting these keystokes maybe?

Also if the cursor is in certain windows e.g. in a text box the arrowed keys get intercepted by windows for the carot position movement maybe that is a problem.

[cean · Accepted solution]

Thanks. I should not call the TranslateMessage function.