Question

qt中如何去掉主窗口标题栏

Answer 1

做qt界面的时候这个问题想了一段时间，不过想象也简单，问了别人才知道是那么简单。 有这样一个程序：#include <QtGui/QApplication> #include <qtextcodec.h>#include <QtGui/QDialog>#include <QtCore/QTimer>#include "widget.h"int main(int argc, char *argv[]){ QTextCodec::setCodecForTr(QTextCodec::codecForName("GB2312")); QApplication a(argc, argv); QDialog dialog; dialog.setStyleSheet(QString::fromUtf8("background-image: url(:/images/1.PNG);/n" "color: rgb(0, 255, 0);/n" "font: 75 16pt /"/345/256/213/344/275/223/";")); dialog.setGeometry(QRect(50, 50, 350, 250)); //可设置窗口显示的方位与大小 dialog.setWindowFlags(Qt::FramelessWindowHint); //也是去掉标题栏的语句 Widget w; QTimer timer; QObject::connect(&timer, SIGNAL(timeout()), &w, SLOT(showNormal())); QObject::connect(&timer, SIGNAL(timeout()), &dialog, SLOT(accept())); timer.start(5000); dialog.exec(); w.showNormal(); // 1、可更改的地方。 return a.exec();} Widget::Widget(QWidget *parent) : QWidget(parent){ QMessageBox::StandardButton message; QApplication::setStyle(QStyleFactory::create("plastique")); QApplication::setPalette(QApplication::style()->standardPalette()); ui.setupUi(this); connect(ui.pushButton, SIGNAL(clicked()), this, SLOT(mountMessage())); connect(ui.pushButton_2, SIGNAL(clicked()), this, SLOT(umountMessage())); connect(ui.pushButton_3, SIGNAL(clicked()), this, SLOT(saveMessage())); connect(ui.pushButton_5, SIGNAL(clicked()), this, SLOT(adjustMessage())); connect(ui.pushButton_7, SIGNAL(clicked()), this, SLOT(about_usMessage())); connect(ui.pushButton_4, SIGNAL(clicked()), this, SLOT(stop_saveMessage())); connect(ui.pushButton_6, SIGNAL(clicked()), this, SLOT(touchMessage())); connect(ui.pushButton_8, SIGNAL(clicked()), this, SLOT(exitMessage())); mount_u(); //挂载U盘成功！ if( !have_video() ) { //if have WebCam? message = QMessageBox::information(this, tr("摄像头未连接"), tr("摄像头未连接，请连接摄像头。") ); } setWindowFlags(Qt::FramelessWindowHint); /2、可更改的地方 setWindowTitle(tr("欢迎使用迷你监控器！"));} 程序中更改两处显示主窗口的样式。1、该处可设置窗口大小样式，有四种选择 w.show(); 实际大小 w.showEvent() 自定义大小 w.showFullScreen(); 全屏 w.showMaximized(); 最大化 w.showMinimized(); 最小化 w.showNormal(); 正常 2、该处是去掉窗口标题栏的语句