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

#include ui_irregularform.h

#include

#include

#include

#include

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