virtual void HidePMExpanderColumn(BOOL bHide = TRUE, UINT flags = GX_UPDATENOW, GXCmdType ctCmd = gxDo)=0;
bHide
TRUE to hide the column, FALSE to show.
flags
Specifies the update technique.
ctCmd
Specifies if the executed command is undone (gxUndo), redone (gxRedo), executed the first time (gxDo) or rolled back (gxRollback).
Call this function to hide or show the plus-minus-expander column.
This function will calculate the absolute column(s) that correspond to the PM expander columns and call HideCols on those columns, passing along the flags and ctCmd arguments.
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