手机发送特殊字符串，控制电脑端截屏

mainwindow.cpp

@@ -123,8 +123,16 @@ void MainWindow::readyRead()
                 type = JO.value("type").toString();
                 if (type == "text") {
                     QString message = JO.value("message").toString();
+                    if (message == "Capture") {
+                        QScreen *screen = QApplication::primaryScreen();
+                        QPixmap pixmap = screen->grabWindow(QApplication::desktop()->winId());
+                        QDateTime time = QDateTime::currentDateTime();
+                        QString filename = time.toString("yyyyMMddhhmmss") + ".jpg";
+                        QString path = QStandardPaths::writableLocation(QStandardPaths::DesktopLocation) + "/" + filename;
+                        pixmap.save(path, nullptr, 100);
+                    }
                     ui->textBrowser->append("[" + QDateTime::currentDateTime().toString("HH:mm:ss") + "] [" + IP_remote + "]：" + message);
-                } else if(type == "file") {
+                } else if (type == "file") {
                     fileName = JO.value("fileName").toString();
                     lastModified = JO.value("lastModified").toDouble()/1000;
                     ui->textBrowser->append("[" + QDateTime::currentDateTime().toString("HH:mm:ss") + "] [" + IP_remote + "]：" + fileName);

mainwindow.h

@@ -19,6 +19,9 @@
 #include <QDropEvent>
 #include <QDragEnterEvent>
 #include <QMimeData>
+#include <QScreen>
+#include <QDesktopWidget>
+#include <QStandardPaths>
 
 namespace Ui {
 class MainWindow;