RichEdit使用大全
一.常见问题
a.可以编译,不能执行的
AfxInitRichEdit();
b.升级默认的Riched版本(默认的有一些bug),如
可在InitInstance中添加
LoadLibrary("RICHED20.DLL")
最后注意 FreeLibrary 如果是CRichEditView基类的可用
BOOL CXXXXXXView::PreCreateWindow(CREATESTRUCT& cs)
{
//装入rich edit version 2.0
if (LoadLibraryA("RICHED20.DLL") == NULL)
{
AfxMessageBox(_T("Fail to load \"riched20.dll\"."),MB_OK | MB_ICONERROR);
PostMessage(WM_QUIT,0,0);
return FALSE;
} m_strClass =RICHEDIT_CLASSA;//for 2.0 class return CRichEditView::PreCreateWindow(cs);
}
c.最后追加行
richeditctrl.SetSel(-1, -1);
richeditctrl.ReplaceSel( (LPCTSTR)str );
d.字数限制
CRichEditCtrl::LimitText(long nChars)
e.换行切换
CRichEditView的OnInitialUpdate()函数中加入下面两句:
m_nWordWrap = WrapNone;
WrapChanged();
WrapChanged实际上也是调用
ctrl.SetTargetDevice(NULL, 1); //m_nWordWrap == WrapNone
ctrl.SetTargetDevice(NULL, 0); //m_nWordWrap == WrapToWindow
还有不常用的 m_nWordWrap == WrapToTargetDevice
ctrl.SetTargetDevice(m_dcTarget, GetPrintWidth());
如果是在Dialog中,可使用SetTargetDevice,注意在属性里面加上want return f.有时候不希望带格式的数据粘贴,可通过PasteSpecial选择性粘贴
pmyRichEditCtrl->;PasteSpecial(CF_TEXT);
g.随着输入随着自动滚动条滚动到最后一行
int nFirstVisible = pmyRichEditCtrl->GetFirstVisibleLine();
if (nFirstVisible > 0)
{
pmyRichEditCtrl->LineScroll(-nFirstVisible, 0);
}
或
m_cRichEdit.PostMessage(WM_VSCROLL, SB_BOTTOM,0);
h.设置UNDO的次数(只能用在RICHED20以上,即默认不支持,必须升级)
SendMessage(EM_SETTEXTMODE,TM_MULTILEVELUNDO,0);
TM_MULTILEVELUNDO 支持多取消(默认值).可通过EM_SETUNDOLIMIT设置最大次数
SendMessage(EM_SETUNDOLIMIT,100,0); i.响应OnChange
EM_SETEVENTMASK 设置 ENM_CHANGE
long lMask = GetEventMask();
lMask |= ENM_CHANGE;
lMask &= ~ENM_PROTECTED;
SetEventMask(lMask); j.设置只读
CRichEditCtrl::SetReadOnly( BOOL bReadOnly = TRUE );
通过设置PROTECTED实现选中的文本只读,参见
http://www.codeguru.com/Cpp/controls/richedit/article.php/c2401/
a.可以编译,不能执行的
AfxInitRichEdit();
b.升级默认的Riched版本(默认的有一些bug),如
可在InitInstance中添加
LoadLibrary("RICHED20.DLL")
最后注意 FreeLibrary 如果是CRichEditView基类的可用
BOOL CXXXXXXView::PreCreateWindow(CREATESTRUCT& cs)
{
//装入rich edit version 2.0
if (LoadLibraryA("RICHED20.DLL") == NULL)
{
AfxMessageBox(_T("Fail to load \"riched20.dll\"."),MB_OK | MB_ICONERROR);
PostMessage(WM_QUIT,0,0);
return FALSE;
} m_strClass =RICHEDIT_CLASSA;//for 2.0 class return CRichEditView::PreCreateWindow(cs);
}
c.最后追加行
richeditctrl.SetSel(-1, -1);
richeditctrl.ReplaceSel( (LPCTSTR)str );
d.字数限制
CRichEditCtrl::LimitText(long nChars)
e.换行切换
CRichEditView的OnInitialUpdate()函数中加入下面两句:
m_nWordWrap = WrapNone;
WrapChanged();
WrapChanged实际上也是调用
ctrl.SetTargetDevice(NULL, 1); //m_nWordWrap == WrapNone
ctrl.SetTargetDevice(NULL, 0); //m_nWordWrap == WrapToWindow
还有不常用的 m_nWordWrap == WrapToTargetDevice
ctrl.SetTargetDevice(m_dcTarget, GetPrintWidth());
如果是在Dialog中,可使用SetTargetDevice,注意在属性里面加上want return f.有时候不希望带格式的数据粘贴,可通过PasteSpecial选择性粘贴
pmyRichEditCtrl->;PasteSpecial(CF_TEXT);
g.随着输入随着自动滚动条滚动到最后一行
int nFirstVisible = pmyRichEditCtrl->GetFirstVisibleLine();
if (nFirstVisible > 0)
{
pmyRichEditCtrl->LineScroll(-nFirstVisible, 0);
}
或
m_cRichEdit.PostMessage(WM_VSCROLL, SB_BOTTOM,0);
h.设置UNDO的次数(只能用在RICHED20以上,即默认不支持,必须升级)
SendMessage(EM_SETTEXTMODE,TM_MULTILEVELUNDO,0);
TM_MULTILEVELUNDO 支持多取消(默认值).可通过EM_SETUNDOLIMIT设置最大次数
SendMessage(EM_SETUNDOLIMIT,100,0); i.响应OnChange
EM_SETEVENTMASK 设置 ENM_CHANGE
long lMask = GetEventMask();
lMask |= ENM_CHANGE;
lMask &= ~ENM_PROTECTED;
SetEventMask(lMask); j.设置只读
CRichEditCtrl::SetReadOnly( BOOL bReadOnly = TRUE );
通过设置PROTECTED实现选中的文本只读,参见
http://www.codeguru.com/Cpp/controls/richedit/article.php/c2401/
TAG:
RichEdit
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