The formatting rectangle is the limiting rectangle into which the control draws the text. The limiting rectangle is independent of the size of the edit control window.
This message is processed only by multiline edit controls. You can send this message to either an edit control or a rich edit control.
Rich Edit 3.0 and later: Indicates whether the new rectangle contains absolute or relative coordinates. A value of zero indicates absolute coordinates. A value of 1 indicates offsets relative to the current formatting rectangle. (The offsets can be positive or negative.)
Edit controls: This parameter is not used and must be zero.
A pointer to a RECT structure that specifies the new dimensions of the rectangle. If this parameter is NULL, the formatting rectangle is set to its default values.
This message does not return a value.
Rich Edit: Supported in Microsoft Rich Edit 3.0 and later. For information about the compatibility of rich edit versions with the various system versions, see About Rich Edit Controls.
Minimum supported client
|Windows 2000 Professional [desktop apps only]|
Minimum supported server
|Windows 2000 Server [desktop apps only]|
Build date: 10/27/2012