QT实现不规则窗体

看到网上有很多不规则窗体的实现,效果很酷.于是使用QT也实现了一个,QT的不规则窗体实现非常简单,只需要设置一个mask(遮掩)图片,这个图片的格式可以使用png或bmp格式,我使用了png格式,默认窗体是矩形的,使用png图像,将需要隔离在窗体之外的区域的像素设置为白色或透明色,其他颜色的区域对应显示出来的窗体.关键代码就几行.

#ifndef IRREGULARFORM_H
#define IRREGULARFORM_H

#include <QWidget>
#include "ui_irregularform.h"
#include <QBitmap>
#include <QPixmap>
#include <QMouseEvent>
#include <QRect>

class IrregularForm : public QWidget
{
 Q_OBJECT

public:
 IrregularForm(QWidget *parent = 0);
 ~IrregularForm();
protected:
 void  mouseMoveEvent(QMouseEvent *event);
 void  mousePressEvent(QMouseEvent *event); 
 void  mouseReleaseEvent(QMouseEvent *event); 
private:
 Ui::IrregularFormClass ui;
 QPoint mouseMovePos;
 
};

#endif // IRREGULARFORM_H

#include "irregularform.h"

IrregularForm::IrregularForm(QWidget *parent)
 : QWidget(parent)
{
 setWindowFlags(Qt::FramelessWindowHint);
 QPixmap mask(":/IrregularForm/Resources/mask.png");//加载掩码图像
 setMask(QBitmap(mask.mask())); //设置窗体的掩码图像,抠除图像的白色区域实现不规则窗体
 QPalette p;//设置调色板
 p.setBrush(QPalette::Window, QBrush(mask));//将调色板的画刷设置为掩码位图,在不规则窗体上显示出掩码位图
 setPalette(p);
 mouseMovePos = QPoint(0, 0);
}

IrregularForm::~IrregularForm()
{

}

void  IrregularForm::mouseMoveEvent(QMouseEvent *event)//鼠标按下并移动则移动不规则窗体
{
 if(mouseMovePos != QPoint(0, 0))
 {
  move(geometry().x() + event->globalPos().x() - mouseMovePos.x(), geometry().y() + event->globalPos().y() - mouseMovePos.y());
  mouseMovePos = event->globalPos();
 }
}

void  IrregularForm::mousePressEvent(QMouseEvent *event)
{
 mouseMovePos = event->globalPos();
}

void  IrregularForm::mouseReleaseEvent(QMouseEvent *event)
{
 mouseMovePos = QPoint(0, 0);
}

效果图

源码下载地址:http://download.csdn.net/detail/henreash/4393914

http://blog.csdn.net/henreash/article/details/7618823