LBase::LoadLibraries

#include "ltwrappr.h"

static L_UINT32 LBase::LoadLibraries (uLibraries, uSubLibraries = LT_ALL_DLG)

Loads a specific set of the LEADTOOLS library DLLs at run-time.

Parameters

L_UINT32 uLibraries

Flag that indicates which LEADTOOLS library DLLs to load. Possible values are given below, and may be combined.

Value Meaning
LT_KRN load the Ltkrnu.dll (Win32), Ltkrnx.dll (x64).
LT_DIS load the Ltdisu.dll (Win32), Ltdisx.dll (x64).
LT_FIL load the Ltfilu.dll (Win32), Ltfilx.dll (x64).
LT_IMG load the ltimg??u.dll for Win32 or ltimgxx?.dll for X64.
LT_EFX load the Ltefxu.dll (Win32), Ltefxx.dll (x64).
LT_DLG load the ltdlg??u.dll for Win32 or ltdlgxx?.dll for X64.
LT_TWN load the Lttwnu.dll (Win32), Lttwnx.dll (x64).
LT_SCR load the Ltscru.dll (Win32), Ltscrx.dll (x64).
LT_ANN load the Ltannu.dll (Win32), Ltannx.dll (x64).
LT_NET load the ltnet??u.dll for Win32 or ltnetxx?.dll for X64.
LV_KRN load the Ltvkrnu.dll (Win32), Ltvkrnx.dll (x64).
LV_DLG load the Lvdlgu.dll (Win32), Lvdlgx.dll (x64).
LT_TMB load the Lttmbu.dll (Win32), Lttmbx.dll (x64).
LT_LST load the Ltlstu.dll (Win32), Ltlstx.dll (x64).
LT_BAR load the ltbar??u.dll for Win32 or ltbarxx?.dll for X64.
LT_ZMV load the Ltzmvu.dll (Win32), Ltzmvx.dll (x64).
LT_IMGOPT load the Ltimgoptu.dll (Win32), Ltimgoptx.dll (x64).
LT_ALL_LEADLIB load all available LEADTOOLS libraries

These values can be combined using the bitwise OR operator ( | ).

L_UINT32 uSubLibraries

Flag that indicates which LEADTOOLS dialog library DLLs to load, this value is only valid if uLibraries contains LT_DLG. Possible values are given below, and may be combined.

Value Meaning
LT_DLGIMGEFX load the Ltdlgimgefxu.dll (Win32), Ltdlgimgefxx.dll (x64).
LT_DLGEFX load the Ltdlgefxu.dll (Win32), Ltdlgefxx.dll (x64).
LT_DLGFILE load the Ltdlgfileu.dll (Win32), Ltdlgfilex.dll (x64).
LT_DLGIMG load the Ltdlgimgu.dll (Win32), Ltdlgimgx.dll (x64).
LT_DLGIMGDOC load the Ltdlgimgdocu.dll (Win32), Ltdlgimgdocx.dll (x64).
LT_DLGCLR load the Ltdlgclru.dll (Win32), Ltdlgclrx.dll (x64).
LT_DLGKRN load the Ltdlgkrnu.dll (Win32), Ltdlgkrnx.dll (x64).
LT_DLGWEB load the Ltdlgwebu.dll (Win32), Ltdlgwebx.dll (x64).
LT_ALL_DLG load all available LEADTOOLS dialogs libraries

These values can be combined using the bitwise OR operator ( | ).

Returns

An L_UINT32 value representing the LEADTOOLS libraries that were loaded successfully. This can be any combination of the constants described above.

Comments

Call this function to load a specific set of the LEADTOOLS library DLLs at run-time. The specified constants will determine which libraries you want to load. If the library is already loaded then this function will not load it again. You can use this function to minimize the memory footprint of your program by loading and unloading the libraries you need when necessary.

Note: if you use LT_DLG in the uLibraries parameter without passing any flag in uSubLibraries, all LEAD dialogs will be loaded by default.

Call this function (LBase::LoadLibraries(LT_KRN) before calling LSettings::SetLicenseFile or LSettings::SetLicenseBuffer.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Example

The following code will load the LEADTOOLS library for the TWAIN scanner
driver (assuming that ltkrnXXn.dll is already loaded), and scan an image
to a bitmap:

L_INT LBase__LoadLibrariesExample() 
{ 
 
	LTwain MyTWAIN; 
	LBitmapBase MyBitmap; 
 
	if(LBase::LoadLibraries(LT_TWN)& LT_TWN) 
	{ 
		MyTWAIN.SetBitmap(&MyBitmap); 
		MyTWAIN.Acquire  ((LBitmap*)NULL,0,0,NULL); 
		LBase::UnloadLibraries(LT_TWN); 
	} 
	return SUCCESS; 
} 

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