Add use scanner.

src/forms/scan/ScanFormWidget.h

@@ -17,6 +17,10 @@ public:
     explicit ScanFormWidget(QWidget *parent = nullptr);
     ~ScanFormWidget() override = default;
     void setPreviewing(bool val);
+
+protected:
+    void keyPressEvent(QKeyEvent *event) override;
+
 private:
     PatientInformationForm* mPatInf= nullptr;
     bool mUnInited = true;