2

嗨,我用这个创建了一个窗口:

WNDCLASSEX WndClass = {0};

if (WndClass.cbSize == 0)
{
    WndClass.cbSize = sizeof(WNDCLASSEX);
    WndClass.style = CS_DBLCLKS;
    WndClass.lpfnWndProc = WindowProcedure;
    WndClass.cbClsExtra = 0;
    WndClass.cbWndExtra = 0;
    WndClass.hInstance = GetModuleHandle(NULL);
    WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    WndClass.hbrBackground = HBRUSH(COLOR_WINDOW+1);
    WndClass.lpszMenuName = NULL;
    WndClass.lpszClassName = ClassName.c_str();
    WndClass.hIconSm = LoadIcon( NULL, IDI_APPLICATION);
}

if (RegisterClassEx(&WndClass))
{

    WindowHandle = CreateWindowEx(0, ClassName.c_str(), WindowName.c_str(), WS_OVERLAPPEDWINDOW | WS_VSCROLL | WS_HSCROLL,
        CW_USEDEFAULT, CW_USEDEFAULT, Width, Height, NULL, NULL, GetModuleHandle(NULL), NULL);
    if(WindowHandle)
    {
        ShowWindow(WindowHandle, SW_SHOWDEFAULT);
    }
}

并尝试添加一个按钮。用这个:

HWND child = CreateWindowEx(0, L"BUTTON", NULL, WS_CHILD | WS_VISIBLE, n * CHILDS_OFSET, posY, GetWidth(), h, window, NULL, NULL, NULL);

执行代码后,我的窗口保持清晰,但如果我移动它或调整它的大小,按钮变得可见,可能是什么问题?

我试过:

RECT rc;
GetClientRect(window, &rc);
InvalidateRect(window, &rc, TRUE);

尝试是否window是主窗口和按钮的句柄。

4

2 回答 2

1

如果您的窗口过程没有WM_PAINT正确处理,则可能会发生这种情况。你必须拥有的最低限度是

...
    case WM_PAINT:
    {
        PAINTSTRUCT ps;
        BeginPaint( wnd, &ps );
        EndPaint( wnd, &ps );
        return 0;
    }
于 2013-08-30T12:18:33.407 回答
0

我想你需要打电话UpdateWindowShowWindow,看这里

于 2013-08-30T12:19:06.250 回答