I want to get the entire text in a rich edit control as a CString something like GetDlgItemText but this is for dialog boxes. The closest thing i can find from my research is: GetTextRange and get the range by using GetTextLength....But I suspect there is a better way....
- GetWindowText.
- GetDlgItemText works to, if you use the parent window and the ID of the RTF Control.
- WM_GETETXT.
If you want to retrieve the complete RTF text you Need to use EM_STREAMOUT (enough samples in the net).
来源：https://stackoverflow.com/questions/20700343/how-to-get-text-from-rich-edit-control-as-a-cstring