EM_EXLIMITTEXT Message

The EM_EXLIMITTEXT message sets an upper limit to the amount of text the user can type or paste into a rich edit control.

Syntax

To send this message, call the SendMessage function as follows.


lResult = SendMessage(
    // returns LRESULT in lResult
   (HWND) hWndControl,
    // handle to destination control
   (UINT) EM_EXLIMITTEXT,
    // message ID
   (WPARAM) wParam,
    // = (WPARAM) () wParam;
   (LPARAM) lParam
    // = (LPARAM) () lParam;

);

Parameters

wParam
This parameter is not used; it must be zero.
lParam
Specifies the maximum amount of text that can be entered. If this parameter is zero, the default maximum is used, which is 64K characters. A Component Object Model (COM) object counts as a single character.

Return Value

This message does not return a value.

Remarks

The text limit set by the EM_EXLIMITTEXT message does not limit the amount of text that you can stream into a rich edit control using the EM_STREAMIN message with lParam set to SF_TEXT. However, it does limit the amount of text that you can stream into a rich edit control using the EM_STREAMIN message with lParam set to SF_RTF.
Before EM_EXLIMITTEXT is called, the default limit to the amount of text a user can enter is 32,767 characters.

Message Information

Header Declared in Richedit.h
Minimum operating systems Windows 95, Windows NT 4.0