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QuestionHow can i use instead of Sleep() method? Pin
sugarpasa8-Feb-16 10:11
Membersugarpasa8-Feb-16 10:11 
Code is as following..I am starting some application and triying to write a username into textbox.Unfortunately,FindWindowEx can not get correct handle because target application takes some time to start.How can wait for the application to get correct handle to textbox? WaitForInputIdle doesn't work since program maintains a login window.

Thanks in advance






C#
[DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)]
        static extern IntPtr FindWindowByCaption(IntPtr ZeroOnly, string lpWindowName);

        //include FindWindowEx
        [DllImport("user32.dll")]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

        //include SendMessage
        [DllImport("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, uint uMsg, IntPtr wParam, string lParam);

        //this is a constant indicating the window that we want to send a text message
        const int WM_SETTEXT = 0X000C;

  private void button1_Click(object sender, EventArgs e)
        {
           
            Process p = Process.Start("SomeApp.exe");
            IntPtr AppTextBox = IntPtr.Zero;
            int i = 0;

            do
            {
                AppTextBox = FindWindowByCaption(IntPtr.Zero, "SomeApp");
                i++;
            } while (AppTextBox.ToInt32() == 0);

          
            // I DONT WANT TO USE SLEEP METHOD HERE
            Thread.Sleep(4000);
        
            AppTextBox = FindWindowEx(p.MainWindowHandle, IntPtr.Zero, "Edit", null);

          
            SendMessage(AppTextBox, WM_SETTEXT, IntPtr.Zero , "Success!");
            
        }


modified 8-Feb-16 16:28pm.

AnswerRe: How can i use instead of Sleep() method? Pin
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