Free Source Code and Program Tips
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How to catch the events when click on the app icon on taskbar
Sep 24th
How to catch the events when you click on the application’s icon on the taskbar?
How to send/post message to CDocument?
Oct 24th
Sometime you need to send/post message to CDoumnet, but CDocument is not a window, and it can’t receive message. How do that? There are 3 solutions: Solution 1: Send the message to the main window. Send/Post the message to the main frame or the view, and then call some functions of the document. But if
Intermittent work in UI thread
Oct 16th
Pedro Ferreira I’m trying to create a UI thread to do constant background work, but I’m having some design problems. The thread needs to fetch records from a database. do some processing on each record and, when there are no more records, sleep for 1 minute before check the database again. The process will be
Intermittent work in UI thread
Oct 16th
Pedro Ferreira said: I’m trying to create a UI thread to do constant background work, but I’m having some design problems. The thread needs to fetch records from a database. do some processing on each record and, when there are no more records, sleep for 1 minute before check the database again. The process will
Install global hook without dll
Jan 3rd
Chinese version author: peach@newsmth.net Userally, when you install a global hook, you need a dll. But now, you can install WH_KEYBOARD_LL or WH_MOUSE_LL global hook without dll’s help. The following code was tested under win2k3. And I it will also run on 2k/xp.
Solution: Crash in Release build with self-defined message
Nov 28th
We often meet such case: I have an application with a modeless dialog. The dialog comes up perfectly in DEBUG build, But in RELEASE build, it crashed. Such problem often occures because of incorrect signature of message handle functions, that included into MFC message map for your CWnd based class.We should very carefully check signatures
What is the usage of WM_NULL?
Nov 23rd
Alex Rest found the WM_NULL message and was curious where somebody would need to use that. I have found a strange Windows message. It is described in MSDN so: WM_NULL: The WM_NULL message performs no operation. An application sends the WM_NULL message if it wants to post a message that the recipient window will ignore.
