L_AutEnumContainers
#include "ltaut.h"
L_LTAUT_API L_INT L_AutEnumContainers(pAutomation, pEnumProc, pUserData )
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pAUTOMATIONHANDLE pAutomation; |
/* pointer to an automation handle */ |
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pAUTOMATIONENUMCONTAINERPROC pEnumProc ; |
/* optional callback function */ |
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L_VOID *pUserData; |
/* pointer to more parameters for the callback */ |
Enumerates all containers associated with the specified automation handle.
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Parameter |
Description |
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pAutomation |
Pointer to an automation handle. |
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pEnumProc |
Optional callback function for additional processing. |
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If you do not provide a callback function, use NULL as the value of this parameter. If you do provide a callback function, use the function pointer as the value of this parameter. The callback function must adhere to the function prototype described in the AUTOMATIONENUMCONTAINERPROC Function. |
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pUserData |
Void pointer that you can use to pass one or more additional parameters that the enumeration callback function needs. |
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To use this feature, assign a value to a variable or create a structure that contains as many fields as you need. Then, in this parameter, pass the address of the variable or structure, casting it to L_VOID *. The callback function, which receives the address in its own pUserData parameter, can cast it to a pointer of the appropriate data type to access your variable or structure. If the additional parameters are not needed, you can pass NULL in this parameter. |
Returns
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SUCCESS |
The function was successful. |
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< 1 |
An error occurred. Refer to Return Codes. |
Comments
For each container enumerated by this function, the AUTOMATIONENUMCONTAINERPROC callback function is called.
The enumeration process continues until the last container is enumerated or the callback function returns 0 or an error.
Required DLLs and Libraries
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LTAUT 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
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Functions: |
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Topics: |
Example
This example shows how to enumerate the automation containers.
/* User defined enumeration callback function */
L_INT EXT_CALLBACK EnumContainersCallback (pCONTAINERHANDLE pContainer,
L_VOID* pUserData )
{
UNREFERENCED_PARAMETER(pUserData);
/* reset the passed container handle */
L_ContainerReset ( pContainer ) ;
/* return SUCCESS to continue the enumeration */
return SUCCESS ;
}
L_INT AutEnumContainersExample(pAUTOMATIONHANDLE pAutomation)
{
L_INT nRet;
nRet = L_AutIsValid ( pAutomation );
if ( SUCCESS == nRet) /* check the validity of the automation handle */
{
/* start enumerating the current added automation containers */
nRet = L_AutEnumContainers ( pAutomation, EnumContainersCallback, NULL );
if(nRet != SUCCESS)
return nRet;
return SUCCESS ;
}
else
{
return nRet ;
}
}