How to Get Control Dimensions from VBGetControlProperty

- Microsoft Visual Basic for Windows, versions 2.0 and 3.0

SUMMARY

This article shows by example how to get the IPROP_STD_LEFT, IPROP_STD_TOP, IPROP_STD_WIDTH, and IPROP_STD_HEIGHT values using the VBGetControlProperty function.

MORE INFORMATION

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>

 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) ;