类似MSN信息发送框的制作(上)
2007-10-07 20:23:21 来源:WEB开发网void CRichEditCtrlEx::InsertBitmap(HBITMAP hBitmap)
{
STGMEDIUM stgm;
stgm.tymed = TYMED_GDI; // Storage medium = HBITMAP handle
stgm.hBitmap = hBitmap;
stgm.pUnkForRelease = NULL; // Use ReleaseStgMedium
FORMATETC fm;
fm.cfFormat = CF_BITMAP; // Clipboard format = CF_BITMAP
fm.ptd = NULL; // Target Device = Screen
fm.dwAspect = DVASPECT_CONTENT; // Level of detail = Full content
fm.lindex = -1; // Index = Not applicaple
fm.tymed = TYMED_GDI;
////创建输入数据源
IStorage *pStorage;
///分配内存
LPLOCKBYTES lpLockBytes = NULL;
SCODE sc = ::CreateILockBytesOnHGlobal(NULL, TRUE, &lpLockBytes);
if (sc != S_OK)
AfxThrowOleException(sc);
ASSERT(lpLockBytes != NULL);
sc = ::StgCreateDocfileOnILockBytes(lpLockBytes,
STGM_SHARE_EXCLUSIVE|STGM_CREATE|STGM_READWRITE, 0, &pStorage);
if (sc != S_OK)
{
VERIFY(lpLockBytes->Release() == 0);
lpLockBytes = NULL;
AfxThrowOleException(sc);
}
ASSERT(pStorage != NULL);
COleDataSource *pDataSource = new COleDataSource;
pDataSource->CacheData(CF_BITMAP, &stgm);
LPDATAOBJECT lpDataObject =
(LPDATAOBJECT)pDataSource->GetInterface(&IID_IDataObject);
///获取RichEdit的OLEClientSite
LPOLECLIENTSITE lpClientSite;
this->GetIRichEditOle()->GetClientSite( &lpClientSite );
///创建OLE对象
IOleObject *pOleObject;
sc = OleCreateStaticFromData(lpDataObject,IID_IOleObject,OLERENDER_FORMAT,
&fm,lpClientSite,pStorage,(void **)&pOleObject);
if(sc!=S_OK)
AfxThrowOleException(sc);
///插入OLE对象
REOBJECT reobject;
ZeroMemory(&reobject, sizeof(REOBJECT));
reobject.cbStruct = sizeof(REOBJECT);
CLSID clsid;
sc = pOleObject->GetUserClassID(&clsid);
if (sc != S_OK)
AfxThrowOleException(sc);
reobject.clsid = clsid;
reobject.cp = REO_CP_SELECTION;
reobject.dvaspect = DVASPECT_CONTENT;
reobject.poleobj = pOleObject;
reobject.polesite = lpClientSite;
reobject.pstg = pStorage;
HRESULT hr = this->GetIRichEditOle()->InsertObject( &reobject );
}
4、读取/写入RTF格式字符串
CRichEditCtrl 提供了两个函数StreamIn()和StreamOut()来实现这个功能,输出的内容包含文本信息和字体信息。我把这两个函数重新包装了一下 ,用GetRTF()把格式文本返回到一个CString变量中SetRTF(CString )实现逆过程。具体代码参看本文附带的工程文件。
三、到此,这个多功能文本框就已经基本能满足我的要求了。但是如何选择表情符号? 如何自动替换? 还是个问题。(待续)
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