I searched for a worked sample which could change icon executable at runtime. Both works fine when I run my app from Qtcreator. I've tried it thanks to QWidget::setWindowIcon () on my mainwindow and later with QApplication::setWindowIcon (). = connectionString Ĭonfig.Save(ConfigurationSaveMode.Modified) ĬonfigurationManager.RefreshSection('connectionStrings') I understand your problem is about changing icon at runtime. Hi all, I've created a Qt application to talk with a remote device and I want to change the taskbar icon to show if the device is connected or not. This replaces the existing connection string: Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None) ĬonnectionStringsSection section = config.GetSection('connectionStrings') as ConnectionStringsSection Step 1: Create 2x & 3x image for App Icon.

I thought you might be missing the part where it sets the ConnectionString with the new value, like this: ConStrSettings.ConnectionString = (ConStrSettings.ConnectionString, connectionString) īut this leads to “ConfigurationErrorsException: The configuration is read only”. Set db CurrentDb db.Properties ('AppIcon') IconPath 'Attempt to assign Application.RefreshTitleBar 'Update On Screen Exit Sub GotErr: If Err.Number 3270 Then 'property doesn't exist Set prp db.CreateProperty ('AppIcon', dbText, IconPath) db.Properties.

Edit any other custom options you want (you can also choose a custom app icon). Then, enter the new custom name or label and select Done. Use the Tap to Edit Label button (it will also show the app name) to change the name. In other words, this line: (ConStrSettings.ConnectionString, connectionString) Next, select the app icon you want to customize from the list of installed apps. This method returns a new string with the replaced valued. When you re-open your program, the value you changed is still the old value. So (…, …) is calling the string Replace(old, new) method. When you try to modify the app.config at runtime, if you don’t do it right, you’ll run into a few problems: You’ll get the following exception: : The configuration is read only. I tried your code, but it’s not updating the app.config.ĬonStrSettings.ConnectionString is a string.

Change appicon during runtine