Automatisierte Screenshot Aufnahme per [SCREENSHOT] datei implementiert

include/videowidget.h

@@ -27,10 +27,27 @@ public:
 
 public:
     void shutdown();   // safe to call multiple times, called from MainWindow::closeEvent
+    // Folder that saveAutoScreenshot() writes into. Empty = not configured
+    // (saveAutoScreenshot() will report an error instead of silently
+    // dropping the request).
+    void setAutoScreenshotDir(const QString &dir) { m_autoScreenshotDir = dir; }
 
 public slots:
     void onNewFrame(const QImage &frame);
     void clearFrame();   // blanks the preview (used on ANSI clear-screen)
+    // Saves whichever frame is currently in m_frame under `filename` inside
+    // m_autoScreenshotDir. Triggered by a [SCREENSHOT] control tag from the
+    // firmware - the point is to grab the frame that's already in flight
+    // the instant the tag arrives (no dialog, no user reaction time), e.g.
+    // to reliably catch a video frame showing a memory dump.
+    void saveAutoScreenshot(const QString &filename);
+
+signals:
+    // Emitted after every saveAutoScreenshot() attempt so the caller (the
+    // main window) can surface a transient status message. Never blocks/
+    // pops a dialog itself, since this can fire in rapid succession from
+    // firmware-driven triggers.
+    void autoScreenshotResult(bool success, const QString &message);
 
 private slots:
     void onStartStop();
@@ -76,4 +93,8 @@ private:
     QProcess *m_recordProcess = nullptr;
     bool      m_recording     = false;
     QSize     m_recordSize;
+
+    // Folder for saveAutoScreenshot() ([SCREENSHOT] tag). Set via
+    // setAutoScreenshotDir(), persisted/restored by MainWindow.
+    QString m_autoScreenshotDir;
 };