Qt5.8 按钮三种状态：Normal、Hover、Click。支持鼠标穿透

本程序是windows下的。

正常状态下：

Hover:

点击：

要求点击红色区域没反应，如图：

代码如下：

#pragma once
#include 
#include 
#include 
#include 
#include 
#include 

#include 
#include 
#pragma comment(lib, "Shlwapi.lib")

enum _ButtonStatus
{
	btnNomal = 0,
	btnHover = 1,
	btnPressed = 2
};
class PushButton :public QPushButton
{
	Q_OBJECT

public:
	explicit PushButton(QWidget *parent = NULL);
	~PushButton();

	void SetImage(const QString& strImage, const QString& strHoverImage, const QString& strPressedImage);

private:
	QString SaveImagePath(const QString& strImage);

private:
	void paintEvent(QPaintEvent *);
	void enterEvent(QEvent *event);
	void leaveEvent(QEvent *event);

public slots:
	void onClicked();

private:
	QString m_strImage;
	QString m_strHoverImage;
	QString m_strPressedImage;
	int nStart;

private:
	float fWidthScale;
	float fHeightScale;
};

.cpp：

#include "PushButton.h"
#include 

PushButton::PushButton(QWidget *parent) : QPushButton(parent)
{
	nStart = btnNomal;
	setStyleSheet("QPushButton{background: transparent;}");
	connect(this, SIGNAL(clicked()), this, SLOT(onClicked()));
	setMouseTracking(true);

	UINT32 m_ScreenWidth = GetSystemMetrics(SM_CXSCREEN);
	UINT32 m_ScreenHeight = GetSystemMetrics(SM_CYSCREEN);
	fWidthScale = (float)m_ScreenWidth / (float)1920;
	fHeightScale = (float)m_ScreenHeight / (float)1080;
}


PushButton::~PushButton()
{
}

QString PushButton::SaveImagePath(const QString& strImage)
{
	wchar_t wcModule[1024] = {0};
	GetModuleFileName(NULL, wcModule, 1024);
	::PathRemoveFileSpec(wcModule);
	wsprintf(wcModule + wcslen(wcModule), L"\\%s", strImage.toStdWString().c_str());
	return QString::fromStdWString(wcModule);
}

void PushButton::SetImage(const QString& strImage, const QString& strHoverImage, const QString& strPressedImage)
{
	m_strImage = SaveImagePath(strImage);
	m_strHoverImage = SaveImagePath(strHoverImage);
	m_strPressedImage = SaveImagePath(strPressedImage);

	QPixmap pixmap(m_strHoverImage);
	QPixmap pixmap_new = pixmap.scaled(pixmap.width() * fWidthScale, pixmap.height() * fHeightScale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
	setIcon(pixmap_new);
	setIconSize(QSize(pixmap_new.width(), pixmap_new.height()));
	setMask(pixmap_new.mask());
}


void PushButton::leaveEvent(QEvent *event)
{
	nStart = btnNomal;
}
void PushButton::enterEvent(QEvent *event)
{
	nStart = btnHover;
}
void PushButton::onClicked()
{
	nStart = btnPressed;
}

void PushButton::paintEvent(QPaintEvent *event)
{
	if (nStart == btnHover){
		QPixmap pixmap(m_strHoverImage);
		QPixmap pixmap_new = pixmap.scaled(pixmap.width() * fWidthScale, pixmap.height() * fHeightScale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);

		QPainter painter(this);
		painter.drawPixmap(rect(), pixmap_new);
		setMask(pixmap_new.mask());
	}
	else if (nStart == btnPressed){
		QPixmap pixmap(m_strPressedImage);
		QPixmap pixmap_new = pixmap.scaled(pixmap.width() * fWidthScale, pixmap.height() * fHeightScale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);

		QPainter painter(this);
		painter.drawPixmap(rect(), pixmap_new);
		setMask(pixmap_new.mask());
	}
	else{
		QPixmap pixmap(m_strImage);
		QPixmap pixmap_new = pixmap.scaled(pixmap.width() * fWidthScale, pixmap.height() * fHeightScale, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);

		QPainter painter(this);
		painter.drawPixmap(rect(), pixmap_new);
		setMask(pixmap_new.mask());
	}
}

调用：

m_btn_ManageUser = new PushButton(this);
	m_btn_ManageUser->SetImage("移入效果4.png", "移入效果111.png", "移入效果2.png");
	m_btn_ManageUser->setGeometry(0, 0, 229, 139);
	connect(m_btn_ManageUser, SIGNAL(clicked()), this, SLOT(OnManageUser()));