What is the difference between Send Message and Post Message ( in terms of pure windows programming) and how these relate to C# ,WPF and Pure windows programming?
I am new to Threading and all related stuff so please excuse me for obvious quesiton .
I need to dig out the externals of Threading .. Please let me know the links that help me to build my concept from win32 programming to WPF.
I need to underderstand from Post message to Afx ( call to start a new thread ) to delegate Invok/Begin Invoke to Dispatcher.
PostMessage (in "pure windows programming", aka win32 API) is asynchronous, i.e., to quote the docs:
Places (posts) a message in the message queue associated with the thread that created the specified window and returns without waiting for the thread to process the message.
To post a message in the message queue associated with a thread, use the PostThreadMessage function.
SendMessage is synchronous, that is, again quoting:
Sends the specified message to a window or windows. The SendMessage function calls the window procedure for the specified window and does not return until the window procedure has processed the message.
To send a message and return immediately, use the SendMessageCallback or SendNotifyMessage function. To post a message to a thread's message queue and return immediately, use the PostMessage or PostThreadMessage function.
A good tutorial on these two functions and their use is here.
The connection to WPF is discussed in this SO question.