使用剪贴板实现进程间通信

/*
把数据放到剪贴板
*/
void CSendClipboardDlg::OnBnClickedOk()
{
    CString str;

    GetDlgItemText(IDC_EDIT1, str);
    if(!OpenClipboard())
        return;
    EmptyClipboard();
    HGLOBAL hClipboardData = GlobalAlloc(GMEM_DDESHARE, str.GetLength() + 1);
    char *pchData = (char *)GlobalLock(hClipboardData);
    strcpy(pchData, LPCSTR(str));
    GlobalUnlock(hClipboardData);
    SetClipboardData(CF_TEXT, hClipboardData);
    CloseClipboard();
}

 

/*
从剪贴板中提取数据
*/
void CRecvClipboardDlg::OnBnClickedOk()
{
    CString str;

    if(!OpenClipboard())
        return;
    if(IsClipboardFormatAvailable(CF_TEXT) || IsClipboardFormatAvailable(CF_OEMTEXT))
    {
        HANDLE hClipboardData = GetClipboardData(CF_TEXT);
        char *pcData = (char *)GlobalLock(hClipboardData);
        str = pcData;
        GlobalUnlock(hClipboardData);
        MessageBox(str);
    } else    {
        MessageBox("There is no text!");
    }
    CloseClipboard();
}