#ifndef QT_SHAPEDWINDOW_H
#define QT_SHAPEDWINDOW_H

#include <QPainter>
#include <QtWidgets/QMainWindow>
#pragma execution_character_set("utf-8")

class Qt_Shapedwindow : public QMainWindow
{
	Q_OBJECT

public:
	Qt_Shapedwindow(QWidget *parent = 0);
	~Qt_Shapedwindow();

private:
	void paintEvent(QPaintEvent *);
};

#endif // QT_SHAPEDWINDOW_H
 

#include "qt_shapedwindow.h"
#include <QtWidgets/QPushButton>

Qt_Shapedwindow::Qt_Shapedwindow(QWidget *parent)
	: QMainWindow(parent)
{
	 this->setWindowOpacity(1); //視窗整體透明度，0-1 從全透明到不透明  
    this->setWindowFlags(Qt::FramelessWindowHint); //設定無邊框風格  
    this->setAttribute(Qt::WA_TranslucentBackground); //設定背景透明，允許滑鼠穿透  

	resize(1000, 666);

	QPixmap pixmap;
	pixmap.load("f:\\nn\\按鈕1.png");

	int nWidth = pixmap.width() * 2;
	int nHeight = pixmap.height() * 2;

	QPushButton * pBtn = new QPushButton(pixmap, "", this);

	pBtn->resize(pixmap.width(), pixmap.height());
	pBtn->move(1000 - pixmap.width(), 0);
	connect(pBtn, SIGNAL(clicked()), this, SLOT(close()));
}

Qt_Shapedwindow::~Qt_Shapedwindow()
{

}
void Qt_Shapedwindow::paintEvent(QPaintEvent *)
{
	QPainter p(this);
	QPixmap pix;
	pix.load("f:\\nn\\123.png");
	p.drawPixmap(0, 0, pix);
}
 

#include "qt_shapedwindow.h"
#include <QtWidgets/QApplication>

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	Qt_Shapedwindow w;
	w.show();
	return a.exec();
}