static L_INT LSettings::SetLicenseBuffer(pLicenseBuffer, nSize, pszDeveloperKey)
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.
Pointer to a memory buffer that contains the entire LEADTOOLS runtime license.
The size, in bytes, of the buffer pointed to by pLicenseBuffer.
Character string containing the developer key.
|SUCCESS||The function was successful.|
|< 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 if support for optional features has been unlocked, use the LSettings::IsSupportLocked function.
To set the runtime license from a disk file instead of a memory buffer, use the LSettings::SetLicenseFile function
Note: To avoid receiving WRPERR_LTKRN_DLL_NOT_LOADED return value, call LBase::LoadLibraries(LT_KRN) prior to calling this function.
#define MY_LICENSE_FILE L_TEXT("d:\\temp\\TestLic.lic")
#define MY_DEVELOPER_KEY L_TEXT("xyz123abc")
/* read the file */
HANDLE hFile = CreateFile(MY_LICENSE_FILE, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
DWORD dwSize = GetFileSize(hFile, NULL);
L_UCHAR* pBuf = (L_UCHAR*)malloc(dwSize);
ReadFile(hFile, (LPVOID)pBuf, dwSize, &dwRead, NULL);
/* set the runtime license */
LeadSettings.SetLicenseBuffer(pBuf, dwRead, 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);
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