virtual L_INT LAnnAutomation::GetSecondaryMetafile(phMetafile)
Retrieves the metafile handle associated with an automation object when it is in the decryptor state.
Pointer to a variable to be updated with the handle to a metafile.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
The automation object has two states:
Each state is displayed with its own metafile. Use this function to retrieve the current metafile for an automation object in a decryptor state. The default image is shown in the figure below:
If this function is successful, the address pointed to by phMetafile will be updated with the metafile handle.
Use the LAnnAutomation::GetMetafile function to retrieve the current metafile for an automation object in an encryptor state.
Win32, x64.
// This example swaps the metafiles for the 'encrypt' and 'decrypt' state of an encryptor.
L_INT LAnnAutomation_GetSecondaryMetafileExample(LAnnAutomation *pLAutomation)
{
L_INT nRet;
HMETAFILE hMetafile1=0;
HMETAFILE hMetafile2=0;
L_BOOL bEncryptorOriginal;
ANNENCRYPTOPTIONS EncryptOptions;
L_UINT uObjectType;
uObjectType = pLAutomation->GetType();
if (uObjectType != ANNOBJECT_ENCRYPT)
{
MessageBox(NULL, TEXT("This object is not an encryptor."), TEXT("Error"), MB_OK);
return 0;
}
HANNOBJECT obj = pLAutomation->GetHandle();
LAnnEncrypt MyAnnEncrypt(obj);
nRet = MyAnnEncrypt.GetMetafile(&hMetafile1);
if(nRet != SUCCESS)
return nRet;
nRet = MyAnnEncrypt.GetSecondaryMetafile(&hMetafile2);
if(nRet != SUCCESS)
return nRet;
memset(&EncryptOptions, 0, sizeof(ANNENCRYPTOPTIONS));
EncryptOptions.uStructSize = sizeof(ANNENCRYPTOPTIONS);
EncryptOptions.uFlags = ANNENCRYPT_ALL;
nRet = MyAnnEncrypt.GetEncryptOptions(&EncryptOptions);
if(nRet != SUCCESS)
return nRet;
bEncryptorOriginal = EncryptOptions.bEncryptor;
// Set state to encryptor, and set encryptor metafile
EncryptOptions.uFlags = ANNENCRYPT_TYPE;
EncryptOptions.bEncryptor = TRUE;
nRet = MyAnnEncrypt.SetEncryptOptions(&EncryptOptions, 0);
if(nRet != SUCCESS)
return nRet;
nRet = MyAnnEncrypt.SetMetafile(hMetafile2, ANNMETAFILE_USER, 0);
if(nRet != SUCCESS)
return nRet;
// Set state to decryptor, and set decryptor metafile
EncryptOptions.bEncryptor = FALSE;
nRet = MyAnnEncrypt.SetEncryptOptions(&EncryptOptions, 0);
if(nRet != SUCCESS)
return nRet;
nRet = MyAnnEncrypt.SetMetafile(hMetafile1, ANNMETAFILE_USER, 0);
if(nRet != SUCCESS)
return nRet;
// Set encryptor to original state
EncryptOptions.bEncryptor = bEncryptorOriginal;
nRet = MyAnnEncrypt.SetEncryptOptions(&EncryptOptions, 0);
if(nRet != SUCCESS)
return nRet;
return SUCCESS;
}
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