WinApi and QT - how use

[TomNow99]

Hello,

I would like to write "hello world" using QT and WinApi: create simple Window. My code:

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    WNDCLASSEXW wc;
    wc.cbSize = sizeof( WNDCLASSEXW );
    wc.style = 0;
    wc.lpfnWndProc = WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance =  (HINSTANCE)::GetModuleHandle(NULL);
    wc.hIcon = 0;
    wc.hCursor = 0;
    wc.hbrBackground =0;
    wc.lpszMenuName = NULL;
    wc.lpszClassName = (LPCWSTR)"myClass";
    wc.hIconSm = 0;
    qInfo()<<RegisterClassExW(&wc);
    HWND window = CreateWindowExW(WS_EX_CLIENTEDGE, (LPCWSTR)"myClass", (LPCWSTR)"title", WS_EX_OVERLAPPEDWINDOW, CW_USEDEFAULT,CW_USEDEFAULT,300,300,NULL, NULL, (HINSTANCE)::GetModuleHandle(NULL), NULL);
    qInfo()<<window;
    ShowWindow(window ,SW_SHOW);
    UpdateWindow( window );
}

I get numbers ( qInfo() ):
49696
0x0

So RegisterClassExW is successed and CreateWindowExW isn't is.

Maybe (HINSTANCE)::GetModuleHandle(NULL) is bad?

[JonB]

@TomNow99
What in the world is the point of this? The whole point about developing in Qt is so that you not use a platform-specific api like WinApi, you use Qt methods instead. I can only imagine you have not understood this. The MainWindow instance you are in is already a main window, all you have to do is show() it. If you really want to do your way, give up on Qt, just use e.g. Visual Studio and a Windows SDK.

[TomNow99]

I know that I can use QDialog to create Window instead of WinApi. But I think this example is very easy, so I think there is another way...