Button not showing, a possible problem because of trying to redirect it to a specific WndProc

[AndreyErick]

The title says everything. I've uploaded the code so that all of you could reproduce the problem, here's it:

WinMain entry point
http://textuploader.com/zm2c

WObject class
http://textuploader.com/zm7l
http://textuploader.com/zm20

WCustomerManager class
http://textuploader.com/zm2y
http://textuploader.com/zmvs

WButton class
http://textuploader.com/zmv1
http://textuploader.com/zmvo

Sorry if I couldn't provide a small test case.
Any help is very appreciated, thanks.

[tath]

i only checked WObject.cpp

LRESULT WObject::WindowProcedure(UINT uMsg, WPARAM wParam, LPARAM lParam)

		case WM_CREATE:
			OnCreate(uMsg, wParam, lParam);
			break;

should return 0:

If an application processes this message, it should return zero to continue creation of the window. If the application returns –1, the window is destroyed and the CreateWindowEx or CreateWindow function returns a NULL handle.

https://msdn.microsoft.com/en-us/library/windows/desktop/ms632619%28v=vs.85%29.aspx

WM_CLOSE

If an application processes this message, it should return zero.

https://msdn.microsoft.com/en-us/library/windows/desktop/ms632617%28v=vs.85%29.aspx

and more. Please refer to MSDN and READ EVERYTHING (especially Remarks)

also:
delete this; in destructor is not needed. Same in main:

WCustomerManager customerManager = WCustomerManager( // this is copying
[...]
delete &customerManager; // this is not needed 

is out of place. It should be:

WCustomerManager * customerManager = new WCustomerManager(
[...]
delete customerManager;