Represents the dialog element's location on the x-axis relative to the top left corner of its parent's client area.

Applies to	ActiveX control, bitmap control, canvas control, control box control, date/time picker control, dialog (all types), dialog bar control, edit area control, graphic text control, group frame control, input field control, list box control, list view control, list view item, OLE container control, push button control, progress bar control, radio button control, rectangle control, scroll bar control, selection box control, slider control, spin control, status bar control, tab control, table control, text constant control, tool bar control, toggle button control, tree view control.
Data Type	I4
Default Value	0
Possible Values	0 - 9999