win32 application 如何创建子窗口

Question

RT

Answer 1

CreateWindow(Ex) 如果你只需要创建对话框可以用DialogBox...

Answer 2

WM_COMMAND命令，响应菜单点击。
WM_MOUSEMOVE，或者WM_MOUSEHOVER、WM_MOUSELEAVE，_TrackMouseEvent();

Answer 3

static HWND create_window(int w, int h)
{
    WNDCLASS wc;
    HINSTANCE hInstance = GetModuleHandle(NULL);
    HWND hwnd;
    RECT rect;
    wc.style = 0 ;
    wc.lpfnWndProc = (WNDPROC)WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = NULL;
    wc.hIcon = NULL;
    wc.hCursor = LoadCursor(hInstance, IDC_ARROW);
    wc.hbrBackground = NULL;
    wc.lpszMenuName =  NULL;
    wc.lpszClassName = "Test Window";
    
    if(!RegisterClass(&wc))
    {
        /* already registred! */
    }
    rect.left=100;
    rect.top=100;
    rect.right=rect.left+w;
    rect.bottom=rect.top+h;
    if (!AdjustWindowRect(&rect,WS_OVERLAPPEDWINDOW|WS_VISIBLE /*WS_CAPTION WS_TILED|WS_BORDER*/,FALSE)){
        MessageBox(NULL,"AdjustWindowRect failed.","Error",MB_OK);
    }
    hwnd=CreateWindow("Test Window", "Test window", 
        WS_OVERLAPPEDWINDOW /*WS_THICKFRAME*/ | WS_VISIBLE ,
        CW_USEDEFAULT, CW_USEDEFAULT, rect.right-rect.left,rect.bottom-rect.top,
                                                    NULL, NULL, hInstance, NULL);
    if (hwnd==NULL){
MessageBox(NULL,"Fail to create test window","Error",MB_OK);
    }
    return hwnd;
}