Sets the runtime license for LEADTOOLS and unlocks support for optional features such as LEADTOOLS Imaging Pro, Document and Medical Imaging capabilities, or PDF support.
L_LTKRN_API L_INT L_SetLicenseFile (pszLicenseFile, pszDeveloperKey)
Character string containing the name of the LEADTOOLS runtime license file to load.
Character string containing the developer key.
|SUCCESS||The runtime license was valid.|
|< 0||An error occurred. Refer to Return Codes.|
You must use this function to set the runtime license for LEADTOOLS and to unlock support for any optional features that you have licensed. If you do not set a runtime license, your application will display a "nag" message dialog at runtime, indicating that you have developed the application without a valid runtime license.
In order to obtain a runtime license and developer key, you must contact LEAD. For more information, refer to About LEADTOOLS Runtime Licenses.
For information about LEADTOOLS Document/Medical capabilities, contact LEAD.
To determine whether support for optional features has been unlocked, use the L_IsSupportLocked function.
To set the runtime license from a memory buffer instead of a disk file, use the L_SetLicenseBuffer function.
Win32, x64, Linux.
Set the LEADTOOLS runtime license from a disk file.
#define MY_LICENSE_FILE L_TEXT("d:\\temp\\TestLic.lic")
#define MY_DEVELOPER_KEY L_TEXT("xyz123abc")
/* set the runtime license */
L_INT nRet = L_SetLicenseFile(MY_LICENSE_FILE, MY_DEVELOPER_KEY);
/* check for unlocked support */
MessageBox(NULL, L_TEXT("Medical Locked\n"), L_TEXT(""), MB_OK);
MessageBox(NULL, L_TEXT("Medical Unlocked\n"), L_TEXT(""), MB_OK);
Medical Web Viewer .NET
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C API/C++ Class Libraries