Intercepting Window Messages

[Alex Pierson]

I have searched and searched and cannot find any code in VB.net that
would allow me to intercept messages from an external application
(window). I have implemented a global keyboard hook successfully but I
cannot figure out how to hook into windows (external application)
messages.

Any pointers (or code)? (Even if it involves the creation of a
non-VB.net dll).

Thanks.

 

[Herfried K. Wagner [MVP]]

Alex,

would allow me to intercept messages from an external application
(window). I have implemented a global keyboard hook successfully but I
cannot figure out how to hook into windows (external application)
messages.

Pick out the right hook here:

Win32 Hooks
<URL:http://msdn.microsoft.com/library/en-us/dnwui/html/msdn_hooks32.asp>

AFAIR you will have to place the hook in a Win32 DLL.

 

[Guest]

Low Level Keyboard Hooking:

http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=1052&lngWId=10

Global HotKeys:

http://www.vb2themax.com/ShowContent.aspx?ID=af74e0ef-3b10-4c7c-8e4b-df9a75f30944

 

[Herfried K. Wagner [MVP]]

Low Level Keyboard Hooking:

Well, I think the OP wants a 'WH_GETMESSAGE' .

 

[Guest]

Hey Mr MVP, I am only across the border from you now ) Have a software
contract (two actually) in Germany/Poland.

The message you typed is listed under the constants section of the old VB 6
API Viewer, but there isn't really that much about it in the Platform SDK
Feb. 2003 documentation, except to see the 'GetMsgProc Function' for more
information.

Your message should also be declared as:

Private Const WH_GETMESSAGE As Integer = 3 'or
Public Const WH_GETMESSAGE As Integer = 3

 

[Herfried K. Wagner [MVP]]

I am only across the border from you now ) Have a software
contract (two actually) in Germany/Poland.

 

[Alex Pierson]

Yes. That is what I'm looking for, but I cannot figure out to use
WH_GETMESSAGE to capture messages from a known hwnd. Can anyone help
me with this?