using .NET Framework 4.7.1

the frame or form Window size shrink after calling Keyboard.GetKeyStates Is there any reason for that ? or its a bug ? I am checking if ctrl is down or toggle on other window .

 if (((int)Keyboard.GetKeyStates(Key.LeftCtrl) == 1 || (int)Keyboard.GetKeyStates(Key.LeftCtrl) == 3))
    {
        Console.WriteLine("pressed");
    }

As can be seen in the pictures:

large image

after calling GetKeyStates

CodePudding user response：

as TnTinMn comment its Dpi aware problem ,I have found the solution here also tried to change the dpi option from app manifest ,did not work .

      static class Program
        {
            /// <summary>
            /// The main entry point for the application.
            /// </summary>
            [STAThread]
        //add this line 
[System.Runtime.InteropServices.DllImport("user32.dll")]
        private static extern bool SetProcessDPIAware();
        static void Main()
            {
        //add this line  
            if (Environment.OSVersion.Version.Major >= 6)
                SetProcessDPIAware();
    
            Application.EnableVisualStyles();
          Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new Form1());
            }
    
    
    }