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flwidget.cpp
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flwidget.cpp
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#include "flwidget.h"
#ifdef Q_OS_WIN
#include <windows.h>
#include <windowsx.h>
#include <QMouseEvent>
#endif
namespace
{
constexpr int BOUDERWIDTH = 10;
}
FLWidget::FLWidget(QWidget *parent) : QWidget(parent), m_bouderWidth(BOUDERWIDTH)
{
setMouseTracking(true);
setWindowFlags(Qt::FramelessWindowHint | Qt::Dialog);
setStyleSheet("background:red");
setAttribute(Qt::WA_ShowModal);
resize(500, 500);
}
FLWidget::~FLWidget()
{
}
void FLWidget::mousePressEvent(QMouseEvent *e)
{
#ifdef Q_OS_WIN
if (e->button() == Qt::LeftButton)
m_curPos = e->pos();
#endif
return QWidget::mousePressEvent(e);
}
void FLWidget::mouseMoveEvent(QMouseEvent *e)
{
#ifdef Q_OS_WIN
if (e->buttons() & Qt::LeftButton)
move(e->pos() + pos() - m_curPos);
#endif
return QWidget::mouseMoveEvent(e);
}
bool FLWidget::nativeEvent(const QByteArray &eventType, void *message, long *result)
{
#ifdef Q_OS_WIN
MSG* msg = (MSG*)message;
switch(msg->message)
{
case WM_NCHITTEST:
int xPos = GET_X_LPARAM(msg->lParam) - this->frameGeometry().x();
int yPos = GET_Y_LPARAM(msg->lParam) - this->frameGeometry().y();
int nUseFulWidth = width() - m_bouderWidth;
int nUseFulHeight = height() - m_bouderWidth;
if (xPos < m_bouderWidth && yPos < m_bouderWidth) //左上角
*result = HTTOPLEFT;
else if (xPos>= nUseFulWidth && yPos < m_bouderWidth) //右上角
*result = HTTOPRIGHT;
else if (xPos < m_bouderWidth && yPos >= nUseFulHeight) //左下角
*result = HTBOTTOMLEFT;
else if (xPos >= nUseFulWidth && yPos >= nUseFulHeight) //右下角
*result = HTBOTTOMRIGHT;
else if (xPos < m_bouderWidth) //左边
*result = HTLEFT;
else if (xPos >= nUseFulWidth) //右边
*result = HTRIGHT;
else if (yPos < m_bouderWidth) //上边
*result = HTTOP;
else if (yPos >= nUseFulHeight) //下边
*result = HTBOTTOM;
else
return false;
return true;
}
#endif
return QWidget::nativeEvent(eventType, message, result); //此处返回false,留给其他事件处理器处理
}