Логика WM_KILLFOCUS ⇐ C++

[Anonymous]

У меня есть следующий код, см. ниже.

Почему код case WM_KILLFOCUS в WinMain() > никогда не достигалось?
Если я удалю case WM_KILLFOCUS из WndProc(), тот, что в WinMain(), все равно не будет достигнут.
Регистр WM_KEYDOWN работает нормально.

Как исправить код, чтобы регистр WM_KILLFOCUS в < strong>WinMain() достигнут?

Код довольно простой.

Спасибо .

#include
HINSTANCE m_hinstance_Module = NULL;
HWND m_hwnd_Window = NULL;
LRESULT CALLBACK WndProc(HWND hwnd, UINT umessage, WPARAM wparam, LPARAM lparam)
{
switch (umessage)
{
case WM_KILLFOCUS:
// THE CODE REACHES THIS POINT.
MessageBoxA(hwnd, "WM_KILLFOCUS", "WndProc()", 0);
return DefWindowProc(hwnd, umessage, wparam, lparam);
case WM_DESTROY:
PostQuitMessage(0);
return 0;
case WM_CLOSE:
PostQuitMessage(0);
return 0;
default:
return DefWindowProc(hwnd, umessage, wparam, lparam);
}
// Done.
return 0;
}

void InitializeWindow()
{
WNDCLASSEX struct_WNDCLASSEX;

m_hinstance_Module = GetModuleHandle(NULL); // If this parameter is NULL, GetModuleHandle returns a
handle to the file used to create the calling process (.exe file).
struct_WNDCLASSEX.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
struct_WNDCLASSEX.lpfnWndProc = WndProc;
struct_WNDCLASSEX.cbClsExtra = 0;
struct_WNDCLASSEX.cbWndExtra = 0;
struct_WNDCLASSEX.hInstance = m_hinstance_Module;
struct_WNDCLASSEX.hIcon = LoadIcon(NULL, IDI_WINLOGO);
struct_WNDCLASSEX.hIconSm = struct_WNDCLASSEX.hIcon;
struct_WNDCLASSEX.hCursor = LoadCursor(NULL, IDC_ARROW);
struct_WNDCLASSEX.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
struct_WNDCLASSEX.lpszMenuName = NULL;
struct_WNDCLASSEX.lpszClassName = L"TEST";
struct_WNDCLASSEX.cbSize = sizeof(WNDCLASSEX);
RegisterClassEx(&struct_WNDCLASSEX);
m_hwnd_Window = CreateWindowEx(WS_EX_APPWINDOW, L"TEST", L"TEST", WS_OVERLAPPEDWINDOW, 0, 0, 800,
600, NULL, NULL, m_hinstance_Module, NULL);
ShowWindow(m_hwnd_Window, SW_SHOW);
SetForegroundWindow(m_hwnd_Window);
SetFocus(m_hwnd_Window);
}

int WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine,
_In_ int nShowCmd)
{
MSG structMsg;
bool blnDone = false;

InitializeWindow();
ZeroMemory(&structMsg, sizeof(MSG));
while (!blnDone)
{
if (PeekMessage(&structMsg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&structMsg);
DispatchMessage(&structMsg);
}
if (structMsg.message == WM_QUIT)
{
blnDone = true;
}
else
{
switch (structMsg.message)
{
case WM_KILLFOCUS:
// THE CODE NEVER REACHES THIS POINT.
MessageBoxA(m_hwnd_Window, "WM_KILLFOCUS", "WinMain()", 0);
break;
case WM_KEYDOWN:
MessageBoxA(m_hwnd_Window, "WM_KEYDOWN", "WinMain()", 0);
break;
}
}
}
return 0;
}


Подробнее здесь: https://stackoverflow.com/questions/601 ... ocus-logic