- 1 year ago
WM_KEYUP for non-Virtual Keys (windows.h WindowProc)
In the Windows API and the WindowProc
function, the WM_KEYUP
message is typically used to handle key release events for virtual keys. However, for non-virtual keys, you need to use the WM_SYSKEYUP
message instead.
The WM_SYSKEYUP
message is used for handling key release events for non-virtual keys, including function keys, navigation keys, and other special keys. You can use this message to capture and handle key release events for these keys in the WindowProc
function.
Here's an example of how you can handle the WM_SYSKEYUP
message in the WindowProc
function:
cppLRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch (uMsg)
{
case WM_SYSKEYUP:
{
UINT keyCode = static_cast<UINT>(wParam);
// Handle the key release event for non-virtual keys
return 0;
}
// Handle other messages...
default:
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
}
In the WindowProc
function, you can add a case statement for the WM_SYSKEYUP
message and handle the key release event for non-virtual keys by extracting the key code from the wParam
parameter. You can then implement your custom logic or perform any necessary actions based on the released key.
Make sure to include the necessary header files (windows.h
) and define the WindowProc
function with the CALLBACK
calling convention.
Note that handling key release events for non-virtual keys may have specific requirements and considerations depending on your application and the specific keys you are targeting. The code snippet above demonstrates the basic approach for handling the WM_SYSKEYUP
message, but you may need to adapt it to suit your specific requirements.