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 <QWidget>#include <QPainter>#include <QBitmap>#include <QEvent>#include <QtWidgets/QPushButton>#include <QtWidgets/QToolButton>#include <inttypes.h>#include <Shlwapi.h>#pragma comment(lib, "Shlwapi.lib")enum _ButtonStatus{btnNomal = 0,btnHover = 1,btnPressed = 2};class PushButton :public QPushButton{Q_OBJECTpublic: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 <Windows.h>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()));