L_AnnGetDpiX
#include "l_bitmap.h"
L_LTANN_API L_INT L_AnnGetDpiX(hObject, pdDpiX)
HANNOBJECT hObject; |
/* handle to the annotation automation object */ |
L_DOUBLE *pdDpiX; |
/* address of the variable to be updated */ |
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.
Parameter |
Description |
hObject |
Handle to the annotation automation object. |
pdDpiX |
Address of the variable to be updated with the current DPI value. |
Returns
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
Comments
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
LTANN For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64.
See Also
Example
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; }