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procedure TForm1.btn1Click(Sender: TObject);
var DataStruct:TCopyDataStruct;
buffsize:Integer;
buff:PChar;
h:HWND;
begin
h:=StrToInt(edt1.Text); //vc窗体句柄
buffsize:=length(edt2.Text)*sizeof(Char)+2; //一个字符站2字节
buff:=StrAlloc(buffsize); //分配内存
StrCopy(buff,PChar(edt2.Text)); //拷贝数据到缓冲区
DataStruct.dwData:=0;
DataStruct.cbData:=buffsize;
DataStruct.lpData:=buff;
SendMessage(h,WM_COPYDATA,0,LongInt(@DataStruct));
end;
//接受消息
BOOL CMyView::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* pCopyDataStruct)
{
if (pCopyDataStruct != NULL)
{
LPCTSTR pszText = (LPCTSTR)(pCopyDataStruct->lpData);
DWORD dwLength = (DWORD)(pCopyDataStruct->cbData);
TCHAR szRecvText[1024] = {0};
memcpy(szRecvText, pszText, dwLength);
MessageBox(szRecvText, _T("Test"), MB_OK);
}
return CWnd::OnCopyData(pWnd, pCopyDataStruct);
}