From: Anonymous on
user32.dll          API function: mouse_event
for example:Public Const MOUSEEVENTF_LEFTDOWN = &H2Public Declare Function SetCursorPos Lib "user32" (ByVal x As Long, ByVal y As Long) As LongPrivate Sub Timer1_Timer()
 
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From: tst on
This can be found in quite a few places in this site (<a href="http://forums.ni.com/ni/board/message?board.id=170&amp;message.id=157723" target="_blank">example</a>) and is actually a fairly simple call. The numbers for the flags come from the header file where the definitions are made.
More information on working with DLLs can be found <a href="http://zone.ni.com/devzone/devzone.nsf/webcategories/E2A99E7E10D5725D862567AC004F0A53" target="_blank">here</a>.
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To learn more about LabVIEW, I suggest you try searching this site and google for LabVIEW tutorials. <a href="http://cnx.rice.edu/content/col10241/latest/" target="_blank">Here</a> and <a href="http://zone.ni.com/devzone/learningcenter.nsf/03f7c60f17aad210862567a90054a26c/55974411828f779086256ce9007504bd" target="_blank">here</a> are a couple you can start with. You can also contact your local NI office and join one of their courses. In addition, I suggest you read <a href="http://zone.ni.com/devzone/conceptd.nsf/webmain/CB5E46406090C61C86256A7000559B66" target="_blank">the LabVIEW style guide</a> and the LabVIEW user manual (Help&gt;&gt;Search the LabVIEW Bookshelf).