CWnd :: Create with CtrlID = null mig [英] CWnd::Create with CtrlID=null mig

问题描述

你好，

我将C ++/MFC 2005项目迁移到VS2010，并且有一个此类调用的类:

Hello,

I migrate a C++/MFC 2005 project to VS2010 and there is a class with this call:

CWnd::Create((LPCSTR)wndstr, "GridClass", dwStyle, grid_rect, pParentWnd, /*nID*/NULL, NULL);

/* .... */

int nID( ::GetDlgCtrlID( this->m_hWnd ) );

期望(VS2005)nID为0，但是在VS2010中，GetDlgCtrlID调用返回一个非null值.有人知道吗?

There are expect (VS2005) that nID is 0, but in VS2010 the GetDlgCtrlID-call returns a non null value. Does anyone know something about this? Is there a known way to create an object from a CWnd-based class with a null-value CtrlID?

推荐答案

对不起，谁告诉你它应该是?

首先是此API的代码示例:
http://msdn.microsoft.com/en-us/library/0yhc9kx4％28v = VS.100％29.aspx [ ^ ].

ID的含义在这里说明:
http://www.codeguru.com/forum/showthread.php?t=344170 [ ^ ].

-SA

Excuse me, who told you it should be NULL?

First at the code sample for this API:
http://msdn.microsoft.com/en-us/library/0yhc9kx4%28v=VS.100%29.aspx[^].

The meaning of ID is explained here:
http://www.codeguru.com/forum/showthread.php?t=344170[^].

—SA

根据

According to the documentation[^] on MSDN a return value of zero indicates an error.

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