winapi -阻止上下文菜单关闭

#include <windows.h>

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
    switch (msg) {
        case WM_CONTEXTMENU:
            // 显示上下文菜单
            TrackPopupMenu(GetSystemMenu(hwnd, FALSE), TPM_LEFTALIGN | TPM_RIGHTBUTTON, LOWORD(lParam), HIWORD(lParam), 0, hwnd, NULL);
            return 0;

        case WM_COMMAND:
            // 根据需要处理菜单命令
            if (LOWORD(wParam) == ID_YOUR_MENU_ITEM) {
                // 处理特定菜单项的逻辑
                // 这里可以添加你的代码
            }
            // 不调用DefWindowProc，阻止默认行为
            return 0;

        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;
    }
    return DefWindowProc(hwnd, msg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
    // 窗口类注册等初始化代码...

    HWND hwnd = CreateWindowEx(0, "YourClassName", "Your Window Title", WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, 640, 480, NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);

    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return (int) msg.wParam;
}