How to Get Control Dimensions from VBGetControlProperty

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The IPROP_STD_LEFT, IPROP_STD_TOP, IPROP_STD_WIDTH, and IPROP_STD_HEIGHT properties are stored as floats. The following code shows how to call VBGetControlProperty to get these properties from a VBX and DLL. It is assumed that the standard property indexes found in VBAPI.H were used to build the control.

/* VBGetControlProperty is prototyped in vbapi.h */ 
#include <vbapi.h>

*** You also need to add "vbapi.lib" to the libraries in the makefile. ***

 float fValue ;
 int nRet ;

  /* hctl would normally be passed in as a HCTL to the function using
     VBGetControlProperty */ 
  /* The third parameter must be the address of a float */ 
 nRet = VBGetControlProperty(hctl, IPROP_STD_TOP, &fValue) ;
				

Now fValue has the value of Top property for the hctl control.