Mainwindow: Fix #7 sqlitebrowser call with QProcess.

View/mainwindow.py

@@ -39,7 +39,7 @@ from View.about_window import AboutWindow
 import settings as stg
 
 import numpy as np
-from subprocess import check_call, run
+from subprocess import run
 
 import time
 
@@ -269,7 +269,21 @@ class Ui_MainWindow(object):
         cc_kt.exec()
 
     def db_browser_for_sqlite(self):
-        check_call("/usr/bin/sqlitebrowser")
+        proc = QtCore.QProcess()
+        if stg.filename_save_as != "":
+            print(f"Set working directory to: '{stg.filename_save_as}'")
+            proc.setWorkingDirectory(
+                os.path.dirname(stg.filename_save_as)
+            )
+
+        proc.start("sqlitebrowser", [])
+        proc.waitForFinished()
+
+        if proc.exitCode() != 0:
+            print(f"'sqlitebrowser' return with error code : {proc.exitCode()}")
+            print("-error------")
+            print(f"{proc.readAllStandardError()}")
+            print("------------")
 
     def about_window(self):
         print("about")