CWnd::OpenClipboard
Visual Studio 2012
Opens the Clipboard.
BOOL OpenClipboard( );
Other applications will not be able to modify the Clipboard until the CloseClipboard Windows function is called.
The current CWnd object will not become the owner of the Clipboard until the EmptyClipboard Windows function is called.
//handler for Edit | Copy menu void CMdiView::OnEditCopy() { if (!OpenClipboard()) { AfxMessageBox(_T("Cannot open the Clipboard")); return; } // Remove the current Clipboard contents if(!EmptyClipboard()) { AfxMessageBox(_T("Cannot empty the Clipboard")); return; } // Get the currently selected data, hData handle to // global memory of data CString str; m_Edit.GetWindowText(str); size_t cbStr = (str.GetLength() + 1) * sizeof(TCHAR); HGLOBAL hData = GlobalAlloc(GMEM_MOVEABLE, cbStr); memcpy_s(GlobalLock(hData), cbStr, str.LockBuffer(), cbStr); GlobalUnlock(hData); str.UnlockBuffer(); // For the appropriate data formats... UINT uiFormat = (sizeof(TCHAR) == sizeof(WCHAR)) ? CF_UNICODETEXT : CF_TEXT; if (::SetClipboardData(uiFormat, hData) == NULL) { AfxMessageBox(_T("Unable to set Clipboard data")); CloseClipboard(); return; } CloseClipboard(); }
