set_pass_btn->setStyleSheet("background-color:transparent");

// 獲取 螢幕大小

#include"QDesktopWidget"

QDesktopWidget*desktopWidget=QApplication::desktop();

QRectdeskRect=desktopWidget->screenGeometry();

this->resize(deskRect.width(),deskRect.height());

// 去除標題欄

this->setWindowFlags(Qt
 
::FramelessWindowHint);

#include<QPixmap>

#include<QPalette>

QScreen*screen=QGuiApplication::primaryScreen();

screen->grabWindow(0).save("bg.bmp","bmp");

QPixmappixmap("bg.bmp");

QPalettepalette;

palette.setBrush(this->backgroundRole(),QBrush(pixmap));

this->setPalette(palette);

QScreen
 
*screen=QGuiApplication::primaryScreen();

screen->grabWindow(0).save(picName,"bmp");

//screen->grabWindow(0,x,y,wid,height).save(picName,"bmp");

/QString 字串格式化

QStringstr=QString("%1x%2").arg(wid).arg(height);

QDateTimetime=QDateTime::currentDateTime();

QStringstr=time.toString("yyyyMMddhhmmss");

QString
 
picName=str+".bmp";

// 獲取程式當前目錄

#include<QDir>

#include<QMessageBox>

QStringpath;

QDirdir;

path=dir.currentPath();

QMessageBox::warning(0,"PATH",path,QMessageBox::Yes);//檢視路徑

QDesktopServices::openUrl(QUrl("file:///C:/Documents and Settings/All Users/"));

//將檔案編碼格式改為UTF-8

//然後重啟QT