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Accessing the message Queue??

Posted on 1998-12-02
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Last Modified: 2013-11-20
I want to access the message queue in windows95 so that I can see when:
1) the screen image has been updated
2) a mouse action has been performed
3) a keyboard action has been performed

and perform specific actions depending on the item in the message queue

Any ideas???
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Question by:ross_nolan
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7 Comments
 

Accepted Solution

by:
gulliver earned 120 total points
ID: 1325655
Very simple, if you use Visual C++ you have a very usefull tool which is called "Spy++" and you can see all the messages of Windows95 on any window.

After you can trap all this messages with the "PretransalteMessage" of your app.

Good luck
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Author Comment

by:ross_nolan
ID: 1325656
How can I trap the messages in Spy++ in VC??
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Expert Comment

by:gulliver
ID: 1325657
Very simple,In the menu Spy, you have the option MessagesIn the dialog window take the circle with your mouse and put it on the window you want to trap Messages.After you can filter the messages you show
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Author Comment

by:ross_nolan
ID: 1325658
while you are going in the right direction I am not sure you understand what exactly I am looking to do.

What I am proposing to do is to Capture certain messages in the queue in an MFC application and perform actions based on these messages.

Any further help would be appriciated

cheers
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Expert Comment

by:gulliver
ID: 1325659
OK,

In your class Wizzard select the Class and Add the PreTranslateMessage Function
After you can test every message like this,
if (pMsg->Message==WM_KEYDOWN)
{

}
Is it OK ?

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Author Comment

by:ross_nolan
ID: 1325660
My problem is "how do I make pMsg point to all the messages generated by the computer", so that I can see when the screen has been changed or the mouse used, by an MFC application running in the background.
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Author Comment

by:ross_nolan
ID: 1325661
I will give you the points because the first answer you gave me pointed me in the right direction for what I wanted to do.
Which is by the way:

create a Hook DLL that will watch all the system messages and any that I wish to process will be sent to appropriate in my program.

all the best
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