Thread: My class doesn't create an edit box.

Originally Posted by Ken Fitlike

You can but it's not pretty - well this isn't anyway:

Thanks. Guess I've learnt something new today!

I always thought GetDesktopHandle() returned NULL, and so I always used NULL for hWndParent when creating a child window, which of course never worked.

Edit:
@sethjackson

I believe your problem is you have 2 different CWindow objects.

One is a global object defined at the top of main.cpp

Code:

#include <windows.h>
#include "editcontrol.h"
#include "window.h"
#include "main.h"

CEditControl EditControl;
CWindow Window;

Another is a local object defined in CEditControl's Create() method.

Code:

int CEditControl::Create()
{
	CWindow Window;
    
	m_hEdit = CreateWindowEx(
	          WS_EX_CLIENTEDGE,
	          "EDIT",
	          NULL,
	          WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_HSCROLL | 
                  ES_MULTILINE | ES_AUTOVSCROLL | ES_AUTOHSCROLL | 
                  ES_WANTRETURN,
	          CW_USEDEFAULT,
	          CW_USEDEFAULT,
	          CW_USEDEFAULT,
	          CW_USEDEFAULT,
	          Window.g_hMainWindow,
	          (HMENU)ID_TEXT,
	          Window.g_hThisInstance,
	          NULL
	          );

So you're trying to create the edit control using a local CWindow object that didn't call CWindow::Create.

Another possible issue: Your CWindow and CEditControl contructors don't initialize their data members to meaningful values.