Question

任何人都可以告诉我如何在没有资源和没有MFC的情况下使用DropDownList（如带有DropDownStyle = DropDownList的C＃ComboBox控件）创建ComboBox吗？我用Google搜索了大约20分钟，但我找到的所有代码示例都为我创建了奇怪的控件（例如，一个带有复选框的普通区域无法检查......）。我的代码如下所示：

WNDCLASSEX wcex;
HWND hwnd;
HWND button;
HDC hDC;
HGLRC hRC;
MSG msg;
BOOL bQuit = FALSE;
float theta = 0.0f;

/* register window class */
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_OWNDC;
wcex.lpfnWndProc = WindowProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = "GLSample";
wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);;


if (!RegisterClassEx(&wcex))
    return 0;

/* create main window */
hwnd = CreateWindowEx(0,
                      "GLSample",
                      "OpenGL Sample",
                      WS_OVERLAPPEDWINDOW,
                      CW_USEDEFAULT,
                      CW_USEDEFAULT,
                      256,
                      256,
                      NULL,
                      NULL,
                      hInstance,
                      NULL);
ShowWindow(hwnd, nCmdShow);

button = CreateWindow("GLSample", "knopf", WS_CHILD | WS_VISIBLE, 200, 200, 150, 60, hwnd, NULL, hInstance, NULL);

Answer 1

您必须再次致电CreateWindow()，指定lpClassName = combobox和dwStyle = CBS_DROPDOWNLIST 您可以使用messages

向其发送SendMessage()来修改其内容

WinApi - ＆gt;如何创建ComboBox（没有资源）

1 个答案: