Insert text into the textbox of another application

by

Use FindWindowEx() to find the handle (HWND) and then send the WM_SETTEXT message using SendMessage()

When using FindWindowEx you will need to first find the main window handle by using its class name. Then you will need to find the handle of whatever container the textbox is in, calling FindWindowEx, passing the handle of the parent (the window), and the class name of the container. You will need to repeat this until you reach the textbox. You can use a tool called Spy++ that is installed by default with Visual Studio to inspect the target application and find out the hierarchy of containers (all objects are really called windows in the API but I’m calling them containers in contrast with the top-level window) with their class names.

More Related Contents:

  1. What is the best choice for .NET inter-process communication? [closed]
  2. What is the simplest method of inter-process communication between 2 C# processes?
  3. IPC Mechanisms in C# – Usage and Best Practices
  4. Example of Named Pipes
  5. Interprocess communication for Windows in C# (.NET 2.0)
  6. How to communicate with a windows service?
  7. How do I get the handle of a console application’s window
  8. Getting HWND off of CoreWindow object in UWP
  9. What is the easiest way to do inter process communication in C#? [closed]
  10. What is the easiest way to do inter-process communication (IPC) in C#? [closed]
  11. Simplest way to make cross-appdomain call?
  12. Deciding between HttpClient and WebClient
  13. ObservableCollection that also monitors changes on the elements in collection
  14. How do I ZIP a file in C#, using no 3rd-party APIs?
  15. Web API Put Request generates an Http 405 Method Not Allowed error
  16. Converting SVG to PNG using C# [closed]
  17. How to compare only date components from DateTime in EF?
  18. Why do C# collection initializers work this way?
  19. C#: How do you edit items and subitems in a listview?
  20. Marshal C++ int array to C#
  21. Is there a possibility to differ virtual printer from physical one?
  22. Why does C#/CLR not support method override co/contra-variance?
  23. C#: multiline text in DataGridView control
  24. JSON.NET cast error when serializing Mongo ObjectId
  25. Parsing a Auto-Generated .NET Date Object with Javascript/JQuery
  26. How do I center a window on the screen in C# & WinForms?
  27. How do I create a custom SynchronizationContext so that all continuations can be processed by my own single-threaded event loop?
  28. Install Windows Service created in Visual Studio
  29. C#: How to open Windows Explorer windows with a number of files selected
  30. Prevent users from resizing the window/form size

Leave a Comment