EM_GETTHUMB Overview  Group

An application sends the EM_GETTHUMB message to retrieve the position of the scroll box (thumb) in a multiline edit control.

EM_GETTHUMB 

wParam = 0;  // not used, must be zero 

lParam = 0;  // not used, must be zero 

 

Parameters

This message has no parameters.

Return Values

The return value is the position of the scroll box.