#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnGetDpiX(hObject, pdDpiX)

Gets the current horizontal DPI (dots per inch) value that is used to translate user input, such as font size, that is expressed in physical measurements.



Handle to the annotation automation object.


Address of the variable to be updated with the current DPI value.


Value Meaning
SUCCESS The function was successful.
< 1 An error occurred. Refer to Return Codes.


The DPI properties apply only to the annotation automation object. Refer to Annotation Automation Object.

Before calling this function, you must declare a variable of data type L_DOUBLE. Then, pass the address of the variable in the pdDpiX parameter. This function will update the variable with the current DPI setting.

Required DLLs and Libraries


Win32, x64.

See Also




This function gets the current dots per inch of the automation object.

L_INT AnnGetDpiXExample(HANNOBJECT hAutoObject) /* Automation object */ 
   L_INT nRet; 
   L_DOUBLE DPIx, DPIy;    /* Dots per inch, horizontal and vertical */ 
   L_TCHAR  szMessage[80]; /* Message buffer */ 
   /* Get the dots per inch */ 
   nRet = L_AnnGetDpiX(hAutoObject, &DPIx); 
   if(nRet != SUCCESS) 
      return nRet; 
   nRet = L_AnnGetDpiY(hAutoObject, &DPIy); 
   if(nRet != SUCCESS) 
      return nRet; 
   /* Display a message box with the result */ 
   wsprintf (szMessage, TEXT("%d horizontal, %d vertical"), (L_INT)DPIx, (L_INT)DPIy); 
   MessageBox (NULL, szMessage, TEXT("Notice"), MB_OK); 
   return SUCCESS; 

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