How to catch windows messages in normal class

How to catch windows messages in normal class

• v-pakote

  Look at the documentation for IMessageFilter. This allows you to specify any class to get a peek at Windows' messages flowing to your application, even if that class is not a Form or Control.

  
  

• Nyasha

  what u r meaning about window message -- is this

  1. Showing Message box.

  2. Catching Exception.

  3. Events.

  or any other

  
  
  

• SpeakerBob

  I’m sticking my neck out here, but I’m not sure what you mean by a ‘normal’ class. The Windows message pump that you’re talking about is specific to Windows Forms. In other words, the form is needed to receive/intercept them. No form, no message pump.
  
  Unless, of course, you’re talking about message queues. :-)
  
  Anyway, more details about what you’re trying to accomplish might help.
  
  Bruce Johnson [C# MVP]
  http://www.objectsharp.com/blogs/bruce
  
  
  
  
  

• thiti300

  Hi

  is this what you are looking for

• Astrogator

  Hoping I have interpreted the original question properly, the desire was to peek in on the messages passing without having to do so within' a specific Form.

  This is very possible as an application itself has a single Messaging Queue that all messages pass through on their way to appropriate Forms/Controls.

  By creating an IMessageFilter-enabled class and registering it, you can do just this. Using the code from the MSDN documentation, adding the following class to your application... and adding

  Application.AddMessageFilter( new TestMessageFilter() );

  Will allow every message to pass through your PreFilterMessage(). While situational, this is a very powerful and useful capability which I have actually needed to use on several occasions.

  public class TestMessageFilter : System.Windows.Forms.IMessageFilter
  {
  public bool PreFilterMessage(ref System.Windows.Forms.Message m)
  {
  // Blocks all the messages relating to the left mouse button.
  if (m.Msg >= 513 && m.Msg <= 515)
  {
  Console.WriteLine("Processing the messages : " + m.Msg);
  return true;
  }
  return false;
  }
  }

  
  
• How to catch windows messages in normal class