LTwain::IsAvailable

#include "ltwrappr.h"

virtual L_BOOL LTwain::IsAvailable()

Determines whether a TWAIN source is installed.

Returns

TRUE	At least one TWAIN source is installed.
FALSE	No TWAIN source is installed.

Comments

You can use this function when deciding whether to enable or disable TWAIN menu items.

Required DLLs and Libraries

LTTWN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:	LTwain::Acquire, LTwain::AcquireList, LTwain::InitSession, LTwain::EndSession, LTwain::OpenTemplateFile, LTwain::CloseTemplateFile, LTwain::TemplateDlg, LTwain::AddCapabilityToFile, LTwain::GetNumofCapsInFile, LTwain::GetCapabilityFromFile.
Topics:	TWAIN Functionality: Property Functions

Example

void TestTWAIN2(HWND hWnd, HBITMAPLIST hBitmap)
{
   L_BOOL bAvailable;
   L_INT nRet;
   LTwain MyClass;
   APPLICATIONDATA AppData;

   /* Check to see if TWAIN is installed */
   bAvailable = MyClass.IsAvailable();
   if (bAvailable)
   {
      AppData.hWnd = hWnd;
      AppData.uStructSize = sizeof(APPLICATIONDATA);
      lstrcpy (AppData.szManufacturerName, TEXT("LEAD Technologies, Inc."));
      lstrcpy (AppData.szAppProductFamily, TEXT("LEAD Test Applications"));
      lstrcpy (AppData.szVersionInfo, TEXT("Version 1.0"));
      lstrcpy (AppData.szAppName, TEXT("TWAIN Test Application"));
      nRet = MyClass.InitSession(&AppData);
      if (nRet != SUCCESS)
         return;

      MyClass.AcquireList(hBitmap, NULL, LTWAIN_SHOW_USER_INTERFACE);
      MyClass.EndSession();
   }
}