Function WindowProc

src/VK/base/FrameworkWindows.cpp:197–286

this is the main message handler for the program

// this is the main message handler for the program
LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    // sort through and find what code to run for the message given
    switch (message)
    {
        case WM_DESTROY:
        {
            PostQuitMessage(0);
            return 0;
        }

        // When close button is clicked on window
        case WM_CLOSE:
        {
            PostQuitMessage(0);
            return 0;
        }

        case WM_KEYDOWN:
        {
            if (wParam == VK_ESCAPE)
            {
                PostQuitMessage(0);
            }

            break;
        }

        case WM_SYSKEYDOWN:
        {
            const bool bAltKeyDown = (lParam & (1 << 29));
            if ((wParam == VK_RETURN) && bAltKeyDown) // For simplicity, alt+enter only toggles in/out windowed and borderless fullscreen
                pFrameworkInstance->ToggleFullScreen();
            break;
        }

        case WM_SIZE:
        {
            if (pFrameworkInstance)
            {
                RECT clientRect = {};
                GetClientRect(hWnd, &clientRect);
                pFrameworkInstance->OnResize(clientRect.right - clientRect.left, clientRect.bottom - clientRect.top);
                bIsMinimized = (IsIconic(hWnd) == TRUE);
                return 0;
            }
            break;
        }

        // When window goes outof focus, use this event to fall back on SDR.
        // If we don't gracefully fallback to SDR, the renderer will output HDR colours which will look extremely bright and washed out.
        // However if you want to use breakpoints in HDR mode to inspect/debug values, you will have to comment this function call.
        case WM_ACTIVATE:
        {
            if (pFrameworkInstance)
            {
                pFrameworkInstance->OnActivate(wParam != WA_INACTIVE);
            }