如何获取对话框项文本的长度？

Question

Im trying to get the dialog item text into a buffer. It works with GetDlgItemText() , but how do i get the length of the text so i can allocate the buffer before i read it in there? I want to be sure i always get the whole text. I could use always for example 10k buffer, but it would be nicer if there wasnt any chance that the user text isnt received completely.

Answer 1

Send the window handle, obtained by calling GetDlgItem , a WM_GETTEXTLENGTH message. Or if you prefer call GetWindowTextLength .