Want to solve: Warning: Creating a pane with no CDocument
- From: Eric Lilja <mindcoolerremoveme@xxxxxxxxx>
- Date: Fri, 18 May 2007 22:41:07 +0200
Hello, I have doc-view program (SDI-type). My frame window class creates a CSplitterWnd with two panes. I'm getting the message in the subject when creating the pane views: Warning: Creating a pane with no CDocument. What have I done wrong? I've cut down the implementation of my frame window to:
FrameWindow.h:
#pragma once
#include "stdafx.h"
class FrameWindow : public CFrameWnd
{
public:
FrameWindow();
protected:
virtual BOOL LoadFrame(UINT, DWORD, CWnd *, CCreateContext *);
virtual BOOL OnCreateClient(LPCREATESTRUCT, CCreateContext *);
DECLARE_DYNCREATE(FrameWindow)
private:
/* The docs say: A CSplitterWnd object is usually embedded in a
parent CFrameWnd or CMDIChildWnd object. */
CSplitterWnd splitter_;
};
FrameWindow.cpp:
#include "FrameWindow.h"
#include "WindowView.h"
IMPLEMENT_DYNCREATE(FrameWindow, CFrameWnd)
FrameWindow::FrameWindow()
{
VERIFY(Create(NULL, _T("Show Styles"), WS_OVERLAPPEDWINDOW, CRect(10, 10, 1024, 768)));
}
BOOL
FrameWindow::LoadFrame(UINT nIDResource, DWORD dwDefaultStyle, CWnd *pParentWnd, CCreateContext *pContext)
{
/* If we execute CFrameWnd::LoadFrame() the program becomes very unhappy... */
return TRUE;
}
BOOL
FrameWindow::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext *pContext)
{
const int rows = 1;
const int columns = 2;
/* A CSplitterWnd should be created in OnCreateClient() according to the docs. */
VERIFY(splitter_.CreateStatic(this, rows, columns));
CRect rect;
GetClientRect(rect);
/* row = 0, column = 0 */
VERIFY(splitter_.CreateView(0, 0, RUNTIME_CLASS(WindowView), CSize(rect.right - 400, 0), pContext));
/* row = 0, column = 1 */
VERIFY(splitter_.CreateView(0, 1, RUNTIME_CLASS(WindowView), CSize(rect.right - (rect.right - 400), 0), pContext));
return TRUE;
}
As you can see I'm using the same view for each pane right now, that will change when I get this problem sorted. WindowView is very simple, nothing added at all at the moment. This practically my first docview program so I guess it's something simple. Hope I posted enough information. Running MSVC++ 8.0 SP1 on fully patched WinXP Pro.
- Eric
.
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