1、设置无边框
this->setWindowFlags(Qt::FramelessWindowHint|Qt::WindowMinMaxButtonsHint);
//当多个按钮绑定同一个方法时，获取被点击的按钮对象
QPushButton* btn = qobject_cast<QPushButton*>(sender());
this->setAttribute(Qt::WA_TranslucentBackground,true);设置窗体透明
this->setWindowFlags(Qt::Window | Qt::FramelessWindowHint);//设置无边框
setAttribute(Qt::WA_StyledBackground); //禁止父窗口影响子窗口样式，放在子窗口里
2、无边窗口拖拽移动
在哪个组件，在哪个组件上拖动窗口，其他组件不起作用
#include <qt_window.h>
#pragma comment(lib,"user32.lib")
void CTitleBar::mousePressEvent(QMouseEvent* event){
if(ReleaseCapture()){
QWidget* pWindow = this->window();
if(pWindow->isTopLevel()){
SendMessage(HWND(pWindow->winId()),WM_SYSCOMMAND,SC_MOVE+HTCAPTION,0);
}
}
event->ignore();
}
3、自定义窗口伸缩方法
nativeEvent
#include<qt_windows.h>
#include<qt_windowsx.h>
#include<windows.h>
#include<windowsx.h>
int m_nBorderWidth = 5;
bool Widget::nativeEvent(const QByteArray &eventType, void *message, long *result)
{
MSG* param = static_cast<MSG*>(message);
switch(param->message)
{
case WM_NCHITTEST:
{
int nX = GET_X_LPARAM(param->lParam) - this ->geometry().x();
int nY = GET_Y_LPARAM(param->lParam) - this ->geometry().y();
//兼容拖拽
if( (nX>m_nBorderWidth) && (nX<this->width()-m_nBorderWidth) && (nY>m_nBorderWidth) && (nY<this->height()-m_nBorderWidth) ){
if(childAt(nX,nY) !=nullptr){
return QWidget::nativeEvent(eventType,message,result);
}
}
if( (nX>0) && (nX<m_nBorderWidth) ){
*result = HTLEFT;
}
if( (nY>0) && (nY<m_nBorderWidth) ){
*result = HTTOP;
}
if( (nX>this->width() - m_nBorderWidth) && (nX<this->width()) ){
*result = HTRIGHT;
}
if( (nY>this->height()-m_nBorderWidth) && (nY<this->height()) ){
*result = HTBOTTOM;
}
if( (nX>0) && (nX<m_nBorderWidth) && (nY>0) && (nY < m_nBorderWidth) ){
*result = HTTOPLEFT;
}
if( (nX>this->width()-m_nBorderWidth) && (nX<this->width()) && (nY>0) && (nY<m_nBorderWidth) ){
*result = HTTOPRIGHT;
}
if( (nX>this->width() - m_nBorderWidth) && (nX<this->width()) && (nY>this->height() - m_nBorderWidth) && (nY<this->height()) ){
*result = HTBOTTOMRIGHT;
}
if( (nX>0) && (nX<m_nBorderWidth) && (nY > this->height() - m_nBorderWidth) && (nY<this->height()) ){
*result = HTBOTTOMLEFT;
}
return true;
}
}
return false;
}