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L_AnnGetTextScaleWithDpi

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnGetTextScaleWithDpi(hObject, pbTextScaleWithDpi)

Gets a value indicating whether to consider the bitmap's DPI when calculating the text font size.

Parameters

HANNOBJECT hObject

Handle to an automation object.

L_BOOL *pbTextScaleWithDpi

Pointer to a variable to be updated with a flag that indicates whether to consider the bitmap's DPI when calculating the text font size. Possible values are:

Value	Meaning
TRUE	Consider the bitmap's DPI.
FALSE	Ignore the bitmap's DPI.

Returns

Value	Meaning
SUCCESS
< 1	An error occurred. Refer to Return Codes.

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.

Platforms

Win32, x64, Linux.

Functions

Topics

Example

Sample for L_AnnGetTextScaleWithDpi, L_AnnSetTextScaleWithDpi.
To try this sample, paste the code into the CDLL Annotation Demo (Annotate.cpp).
And replace the code for the About Box (IDM_ABOUT) as follows:
case IDM_ABOUT:
{
ABOUT_DIALOG(hwnd, "Annotation");
hwndChild = (HWND)SendMessage(hwndClient, WM_MDIGETACTIVE, 0, 0);
if (hwndChild)
{
LPCHILDDATA pData = (LPCHILDDATA)GETWNDDATA(hwndChild);
AnnEnumerateObjects(pData->hContainer);
}
break;
}

L_INT AnnGetTextScaleWithDpiExample(HANNOBJECT hObject, HWND hWnd) 
{ 
   /* hObject must be of type ANNOBJECT_TEXT */ 
   L_INT nRet; 
   L_BOOL bTextScaleWithDpi = L_FALSE; 
 
   nRet = L_AnnGetTextScaleWithDpi(hObject, &bTextScaleWithDpi);  // Store old value 
   nRet = L_AnnSetTextScaleWithDpi(hObject, !bTextScaleWithDpi);  // Toggle the value and repaint 
   RedrawWindow(hWnd, NULL, NULL, RDW_INVALIDATE); 
   MessageBox(NULL, TEXT("TextScaleWithDpi Value has been toggled."), TEXT("Info"), MB_OK); 
 
   nRet = L_AnnSetTextScaleWithDpi(hObject, bTextScaleWithDpi);  // Reset old value and repaint 
   RedrawWindow(hWnd, NULL, NULL, RDW_INVALIDATE); 
   MessageBox(NULL, TEXT("TextScaleWithDpi Value has been restored."), TEXT("Info"), MB_OK); 
 
   return SUCCESS; 
} 
 
L_INT EXT_CALLBACK annTextDPIScaleCallback(HANNOBJECT hObject, L_VOID *pUserData) 
{ 
   L_UINT ObjectType; 
   L_INT ObjectCount; 
 
   ObjectCount = (L_INT)pUserData; 
 
   L_AnnGetType(hObject, &ObjectType); 
 
   if (ObjectType == ANNOBJECT_TEXT || ObjectType == ANNOBJECT_NOTE) 
   { 
      AnnGetTextScaleWithDpiExample(hObject, GetActiveWindow()); 
   } 
 
   return SUCCESS; 
} 
 
L_VOID AnnEnumerateObjects(HANNOBJECT hContainer) 
{ 
   L_AnnEnumerate(hContainer, annTextDPIScaleCallback, NULL, ANNFLAG_RECURSE, NULL); 
}

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