Set in Visual Studio a breakpoint, or else, in order to intercept a click on button in dockable window

[marhuum]

How in Visual Studio can we set a breakpoint, or set up a hook, or do whatever else, to be able to intercept clicking on a button in dockable window being built in C++ upon win32 API, and then bring into its handler for debugging?

[thmm]

Buttons send either a WM_COMMAND or WM_NOTIFY message.
Set your breakpoint inside the code that handles the message.