Get Trim Rectangle

3270 5250 VT
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The Get Trim Rectangle function returns to the client the area of the presentation space that is within the current trim rectangle. The client sends the following message to receive the trim rectangle.
PostMessage( hServerWnd,
             WM_DDE_REQUEST,
             hClientWnd,
             MAKELPARAM(cfFormat, aTRIMRECT) );
where:
cfFormat
Identifies the format for the trim rectangle. This is CF_TEXT.
aTRIMRECT
Identifies trim rectangle as the data item requested.