Embed Qmessagebox in the Borderless message prompt box

#ifndef CUSTOMMESSAGEBOX_H
#define CUSTOMMESSAGEBOX_H

#include <QDialog>
#include <QMessageBox>
#include <QShowEvent>
#include <QMouseEvent>
#include <QPoint>
#include <QLabel>
#include <QToolButton>
#include <QHBoxLayout>
#include <QResizeEvent>
#include <QPushButton>

class CCustomMessageBox : public QDialog 
{
	Q_OBJECT

public:
	CCustomMessageBox(QString msg, int type = 0,QWidget *parent = 0);
	~CCustomMessageBox();
	
private:
	QPoint			m_movePoint;
	bool			m_bmousePress;

private:
	QHBoxLayout*	m_titlelayout;
	QLabel*			m_titleLbl;
	QWidget*		m_titleWgt;
	QToolButton*	m_closeBtn;
	QMessageBox*	m_msgBox;
public:
	void initButton(void);
	void setMessage(QString msg, int type);
	void initTitle();
	void showMessage(QString msg, int type);
protected:
	void	mousePressEvent(QMouseEvent *event);
	void	mouseReleaseEvent(QMouseEvent* event);
	void	mouseMoveEvent(QMouseEvent* event);
	void	paintEvent(QPaintEvent * event);

public slots:
	int okClicked();
	int cancelClicked();
};



#endif // CUSTOMMESSAGEBOX_H







#include <QHBoxLayout>
#include <QPalette>
#include <QPainter>
#include <QBrush>
#include <QPushButton>
#include <QFontMetrics>

#include "customMessageBox.h"

#pragma execution_character_set("utf-8")

CCustomMessageBox::CCustomMessageBox(QString msg, int type, QWidget *parent)
	: QDialog(parent), m_bmousePress(false)
{
	setAttribute(Qt::WA_DeleteOnClose);	
	setWindowFlags(Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint|Qt::Dialog);
	setMouseTracking(true);
	
	m_titleLbl = new QLabel(this);
	m_closeBtn = new QToolButton(this);
	connect(m_closeBtn, SIGNAL(clicked()), this, SLOT(close()));
	m_titleWgt = new QWidget(this);

	showMessage(msg, type);
}

CCustomMessageBox::~CCustomMessageBox()
{

}

void CCustomMessageBox::mousePressEvent(QMouseEvent *event)
{
	if (event->button() == Qt::LeftButton)
	{
		m_bmousePress = true;
		m_movePoint = event->pos();
	}
}

void CCustomMessageBox::mouseMoveEvent(QMouseEvent* event)
{
	if (m_bmousePress && (event->buttons()& Qt::LeftButton))
	{
		QPoint move_pos = event->globalPos();
		this->move(move_pos - m_movePoint);
	}
}

void CCustomMessageBox::mouseReleaseEvent(QMouseEvent* event)
{
	m_bmousePress = false;
}

void CCustomMessageBox::paintEvent(QPaintEvent * event)
{
	QPainter painter(this);
	int const constLineWidth = 2;
	int const topLeftWidth = constLineWidth / 2;			//上边的和左边的画笔的起始位置
	int const bottomRightWidth = (constLineWidth + 1) / 2;	//右边和下边的画笔的起始位置
	painter.setPen(QPen(Qt::darkGreen, constLineWidth));
	painter.drawLine(0, topLeftWidth, this->width(), topLeftWidth);
	painter.drawLine(this->width() - bottomRightWidth, constLineWidth, this->width() - bottomRightWidth, this->height());
	painter.drawLine(topLeftWidth, 0, topLeftWidth, this->height());
	painter.drawLine(constLineWidth, this->height() - bottomRightWidth, this->width(), this->height() - bottomRightWidth);
}

int CCustomMessageBox::okClicked()
{
	done(1);
	close();
	return 1;
}

int CCustomMessageBox::cancelClicked()
{
	done(0);
	close();

	return 0;
}

void CCustomMessageBox::initTitle(void)
{
	m_titlelayout = new QHBoxLayout(this);
	m_titlelayout->addWidget(m_titleLbl, 0, Qt::AlignLeft);
	m_titlelayout->addWidget(m_closeBtn, 0, Qt::AlignTop);
	m_titlelayout->setSpacing(5);
	m_titlelayout->setContentsMargins(2, 2, 1, 2);
	m_titleWgt->setLayout(m_titlelayout);

	m_titleWgt->setFixedHeight(30);
	m_titleWgt->setAutoFillBackground(true);

	QPalette palette;
	palette.setBrush(QPalette::Background, QBrush(QPixmap("./images/titleBg")));
	m_titleWgt->setPalette(palette);
	m_titleWgt->setGeometry(2, 2, this->width() - 4, 30);
}


void CCustomMessageBox::showMessage(QString msg, int type)
{
	QVBoxLayout* layout = new QVBoxLayout(this);

	initTitle();
	setMessage(msg, type);

	QString text = m_msgBox->windowTitle();
	m_titleLbl->setFont(QFont("TypeWriter", 14, QFont::Bold));
	m_titleLbl->setStyleSheet("background: transparent;");
	m_titleLbl->setText(text);

	layout->addWidget(m_titleWgt);
	layout->addWidget(m_msgBox, 0, Qt::AlignHCenter);
	layout->setContentsMargins(2, 2, 2, 2);

	setLayout(layout);
}

void CCustomMessageBox::setMessage(QString msg, int type)
{
	if (type < 0 || type > 3)
		return;

	QPushButton* okBtn = NULL;
	QPushButton* cancelBtn = NULL;
	//0:基本信息；  1：询问； 2：警告； 3：错误
	switch (type)
	{
	case 0:
		m_msgBox = new QMessageBox(QMessageBox::Information, tr("提示"), msg);
		break;
	case 1:
		m_msgBox = new QMessageBox(QMessageBox::Question, tr("询问"), msg);
		break;
	case 2:
		m_msgBox = new QMessageBox(QMessageBox::Warning, tr("警告"), msg);
		break;
	case 3:
		m_msgBox = new QMessageBox(QMessageBox::Critical, tr("错误"), msg);
		break;
	default:
		break;
	}

	okBtn = m_msgBox->addButton(tr("确定"), QMessageBox::AcceptRole);
	connect(okBtn, &QPushButton::clicked, this, &CCustomMessageBox::okClicked);

	if (type == 1)
	{
		cancelBtn = m_msgBox->addButton(tr("取消"), QMessageBox::RejectRole);
		connect(cancelBtn, &QPushButton::clicked, this, &CCustomMessageBox::cancelClicked);
	}
}


 

	
  


 

Because it is embedded in the Qmessagebox message box, the size can only vary with the size of the Qmessagebox, and when the Qmessagebox is not supported directly resizing, only according to the length of the message to automatically adjust, and the default message icon is not good to see ~~~~~~

Button class can be used to beautify the QSS, the appearance of the interface will be a bit better ~ ~ ~