-2

每个人 ！我试图在 C++ 应用程序中同时拥有 2 个按钮，并且彼此执行 2 个不同的操作。代码 ：

MSG msg;
HWND m_hwnd = GetConsoleWindow();
HWND hwndButton1 = CreateWindow(TEXT("button"), TEXT("B1"), WS_TABSTOP | WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON | BS_FLAT, 100, 100, 100, 30, m_hwnd, NULL, (HINSTANCE)GetWindowLong(m_hwnd, GWL_HINSTANCE), NULL);
HWND hwndButton2 = CreateWindow(TEXT("button"), TEXT("B2"), WS_TABSTOP | WS_VISIBLE | WS_CHILD | BS_DEFPUSHBUTTON | BS_FLAT, 200, 100, 100, 30, m_hwnd, NULL, (HINSTANCE)GetWindowLong(m_hwnd, GWL_HINSTANCE), NULL);
ShowWindow(hwndButton2, SW_SHOW);
ShowWindow(hwndButton1, SW_SHOW);
UpdateWindow(hwndButton2);
UpdateWindow(hwndButton1);
while(1)
{
    GetMessage(&msg, NULL, 0, 0);
    TranslateMessage(&msg);
    DispatchMessage(&msg);
    if((HIWORD(WPARAM)) == BN_CLICKED and ((HWND)LPARAM) == hwndButton1)
    {
        printf("1st clicked");
    }
    if((HIWORD(WPARAM)) == BN_CLICKED and ((HWND)LPARAM) == hwndButton2)
    {
        printf("2nd clicked");
    }
}

但它在'if'中给了我一个CE：“预期的主要表达式beore'）'令牌”（x2，对于每个'if'）。你能帮助我吗 ？

4

1 回答 1

3

WPARAM并且LPARAM是类型。您应该使用msg.wParamandmsg.lParam代替：

if((HIWORD(msg.wParam)) == BN_CLICKED and ((HWND)msg.lParam) == hwndButton1)
于 2018-07-13T12:52:39.983 回答