在程序中动态控制CEdit是否自动换行，没什么没效果？

[liuyan4794]

在程序中动态控制CEdit是否自动换行，没什么没效果？
if(this->m_CKCmd.GetCheck()==BST_CHECKED)
{
DWORD ws=::GetWindowLong(this->m_RecEdit.GetSafeHwnd(),GWL_STYLE);
::SetWindowLong(this->m_RecEdit.GetSafeHwnd(),GWL_STYLE,ws|ES_AUTOHSCROLL);
}
else
{
DWORD ws=::GetWindowLong(this->m_RecEdit.GetSafeHwnd(),GWL_STYLE);
::SetWindowLong(this->m_RecEdit.GetSafeHwnd(),GWL_STYLE,ws&~ES_AUTOHSCROLL);
}
this->Invalidate();

[vcmute]

需要重新CreateWindow,MSDN的例子

BOOL CPadView::SetWordWrap(BOOL bWordWrap)
{
bWordWrap = !!bWordWrap; // make sure ==TRUE || ==FALSE
if (IsWordWrap() == bWordWrap)
return FALSE;

// preserve original control's state.
CFont* pFont = GetFont();
int nLen = GetBufferLength();
TCHAR* pSaveText = new TCHAR[GetBufferLength()+1];
GetWindowText(pSaveText, nLen+1);

// create new edit control with appropriate style and size.
DWORD dwStyle = dwStyleDefault & ~(ES_AUTOHSCROLL|WS_HSCROLL|WS_VISIBLE);
if (!bWordWrap)
dwStyle |= ES_AUTOHSCROLL|WS_HSCROLL;

CWnd* pParent = GetParent();
CRect rect;
GetWindowRect(rect);
pParent->ScreenToClient(rect);
CWnd* pFocus = GetFocus();

UINT_PTR nID = GetDlgCtrlID();

HWND hWnd = ::CreateWindowEx(WS_EX_CLIENTEDGE, _T("edit"), NULL, dwStyle,
rect.left, rect.top, rect.right-rect.left, rect.bottom-rect.top,
pParent->m_hWnd, (HMENU)nID, AfxGetInstanceHandle(), NULL);

if (hWnd == NULL)
{
delete[] pSaveText;
return FALSE;
}

// set the window text to nothing to make sure following set doesn't fail
SetWindowText(NULL);

// restore visual state
::SetWindowText(hWnd, pSaveText);
delete[] pSaveText;
if (pFont != NULL)
{
ASSERT(pFont->m_hObject != NULL);
::SendMessage(hWnd, WM_SETFONT, (WPARAM)pFont->m_hObject, 0);
}

// detach old window, attach new
SetDlgCtrlID((UINT)nID+1);
HWND hWndOld = Detach();
::SetWindowLongPtr(hWndOld, GWL_WNDPROC, (LONG_PTR)*GetSuperWndProcAddr());
ASSERT(m_hWnd == NULL);
SubclassWindow(hWnd);
ASSERT(m_hWnd == hWnd);
GetParentFrame()->SendMessage(WM_RECALCPARENT);

UINT nTabStops = m_nTabStops;
GetEditCtrl().SetTabStops(nTabStops);

GetClientRect(&rect);
SetWindowPos(NULL, 0, 0, 0, 0,
SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_SHOWWINDOW);
SetWindowPos(NULL, 0, 0, 0, 0,
SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_DRAWFRAME);
SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE);
UpdateWindow();

// destroy old
::SetWindowPos(hWndOld, NULL, 0, 0, 0, 0,
SWP_HIDEWINDOW|SWP_NOREDRAW|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
SWP_NOZORDER);
::DestroyWindow(hWndOld);

// restore rest of state...
GetEditCtrl().LimitText(nMaxSize);
if (pFocus == this)
SetFocus();

// notify container that doc changed
GetDocument()->UpdateAllItems(NULL);

ASSERT_VALID(this);
return TRUE;
}

[jerry]

在原EDIT 的 位置 创建一个新的 CEdit , 然后将原EDIT的内容送过去. 显示出来, 原EDIT 删除

[liuyan4794]

真是太可恶了吧

[xxrl]

恩上面说得正确 需要重新create

[koko1998]

学习了.
mark

[liuyan4794]

我还不如在开始就创建两个，然后再这两个之间切换呢

[liuyan4794]

谢谢大家帮忙，揭帖了