typedef void( * DRAWFUNC )( HBITMAP *hBmp, HDC *hDC , int width, int height);

class CreateButton
{
    public:
        CreateButton(class CreateButton **wsk, RECT Region, DRAWFUNC newDrawFunc);
        ~CreateButton();
        void Destroy();

        void Redraw();
    private:
        HWND hwnd_Button;
        HBITMAP hBmp;
        HDC hDC;
        DRAWFUNC DrawFunc;

};
CreateButton::CreateButton(class CreateButton **wsk, RECT Region, DRAWFUNC newDrawFunc){
    DrawFunc = newDrawFunc;
    hwnd_Button = //tworzę okno o wymiarach "Region"
    SetWindowLong(hwnd_Button, 0, (LONG)wsk); //przypisuję klasę do okna aby móc pobierać hdc do rysowania po kontrolce
}
~CreateButton::CreateButton(){
    ReleaseDC(hwnd_Button);
    DeleteObject(hBmp);
}
void CreateButton::Redraw(){
    DrawFunc(&hBmp, &hDC, /*width*/, /*height*/);
}
void CreateButton::Destroy(){
    DestroyWindow(hwnd_Button);
}