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I see here and there pro users answer lots of noobs like me questions with things like WM_PAINT = 0xf What should I search for to get complete list of this codes? are they all the same for all verions of windows? can they also used for other platforms?
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The operating system communicates with your application window by passing messages to it. A message is simply a numeric code that designates a particular event. For example, if the user presses the left mouse button, the window receives a message that has the following message code.
The message loop is an obligatory section of code in every program that uses a graphical user interface under Microsoft Windows. Windows programs that have a GUI are event-driven. Windows maintains an individual message queue for each thread that has created a window. Usually only the first thread creates windows.
Windows defines a constant, WM_USER, to represent the value at which you can start defining your own messages. Windows reserves all messages from 0 to WM_USER -1 for its own use. However, you can define any messages you like. between the values of WM_USER and WM_USER+0x7FFF.
Is this table of any help?
I'm not sure whether all Windows versions send all these message, but I'm pretty sure the codes aren't different between versions.
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WM_PAINT = 0xf is a specific parameter for a certain method. those "codes" are usually needed with interlop stuff; using unmanaged core libraries such as user32 and kernel32.
You can find methods and their parameters like that on the site http://pinvoke.net.
For example, your example WM_PAINT is from User32.GetMessage
If you want a full list of specific WindowsMessage parameters; they can be found here.
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