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#include "ax1.h"
#include <windows.h>

#include <QApplication>
#include <QTextCodec>
#include <QPushButton>

extern "C" __declspec( dllexport ) HWND proc_set_widget(HWND parent_handle);

QApplication *app = 0;
AXTIV_WIDGET *w = 0;
WNDPROC funcWindowPtr = 0;

extern "C" LRESULT CALLBACK QtWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);

LRESULT CALLBACK NewWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	
	//if (funcWindowPtr)
	  //CallWindowProc(funcWindowPtr, hWnd, message, wParam, lParam);
      
    CallWindowProc(QtWndProc, hWnd, message, wParam, lParam);

	return 0;
}

//parent_handle == TObject.Handle
AXTIV_WIDGET::AXTIV_WIDGET(HWND parent_handle) :fill_color(Qt::red)
{
      
    extern HINSTANCE appInst;
    extern HINSTANCE appPrevInst;

    appPrevInst = appInst;
    appInst = (HINSTANCE)GetWindowLong(parent_handle, GWL_HINSTANCE);
   
    SetWindowLong(winId(), GWL_HINSTANCE , (LONG)GetWindowLong(parent_handle, GWL_HINSTANCE));
    SetWindowLong(winId(), GWL_HWNDPARENT, (LONG)parent_handle);

    funcWindowPtr = (WNDPROC)GetWindowLong(parent_handle, GWL_WNDPROC);

    SetWindowLong(winId(), GWL_WNDPROC, (LONG)NewWndProc);
    QWidget::create(parent_handle, true, true);

    setFillColor(QColor("Red"));
    
    b = new QPushButton(this);
    b->setGeometry(0,0, 20, 20);
    b->setText(tr("OK"));
    b->show();
    show();
    }


HWND proc_set_widget(HWND parent_handle)
{
 int argc = 0;
 char **argv = 0;
 
  if (app  == 0)
    {
      app = new QApplication(argc, argv);
  
      QTextCodec *tCodec = QTextCodec::codecForName("CP1251");
      QTextCodec::setCodecForTr(tCodec);   	
	}
   

    if (w != 0)
      delete w;

     extern HINSTANCE appInst;
    extern HINSTANCE appPrevInst;

    appPrevInst = appInst;
    appInst = (HINSTANCE)GetWindowLong(parent_handle, GWL_HINSTANCE);

    w = new AXTIV_WIDGET(parent_handle); 

    w->setGeometry(0,0, 30, 30);
	w->show();

    SetWindowPos(w->winId(), 0, 0, 0, 0, 0,
                     SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER
                     | SWP_FRAMECHANGED);

    SetWindowLong(w->winId(), GWL_STYLE, WS_VISIBLE | WS_BORDER |WS_CHILD | WS_MAXIMIZEBOX);

    ShowWindow(w->winId(), SW_NORMAL);  
   
	return w->winId();;
}

//это заголовочный файл
#ifndef AX1_H
#define AX1_H

#include <QWidget>
#include <QPainter>

#include <windows.h>

#include <QApplication>

#include <QPushButton>

//! [0]
class AXTIV_WIDGET : public QWidget
{
    Q_OBJECT
/*    Q_CLASSINFO("ClassID", "{1D9928BD-4453-4bdd-903D-E525ED17FDE5}")
    Q_CLASSINFO("InterfaceID", "{99F6860E-2C5A-42ec-87F2-43396F4BE389}")
    Q_CLASSINFO("EventsID", "{0A3E9F27-E4F1-45bb-9E47-63099BCCD0E3}")
*/
    Q_PROPERTY(QColor fillColor READ fillColor WRITE setFillColor)
public:
  QPushButton *b;

AXTIV_WIDGET(HWND parent_handle);

    QColor fillColor() const
    {
	return fill_color;
    }
    void setFillColor(const QColor &fc)
    {
	fill_color = fc;
	repaint();
    }

protected:
    void paintEvent(QPaintEvent *e)
    {
	QPainter paint(this);
	QRect r = rect();
	r.adjust(10, 10, -10, -10);
	paint.fillRect(r, fill_color);
    }

private:
    QColor fill_color;
};
//! [0]

#endif // AX1_H