LEADTOOLS TWAIN C++ Class Library Help
| LEADTOOLS TWAIN C++ Class Library Help > Classes and Function References > LTwain > LTwain Class Members > LTwain::SetPropertyCallBack |
#include "ltwrappr.h"
virtual L_INT LTwain::SetPropertyCallBack (uCap, nStatus, pValue)
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L_UINT uCap; |
/* capability being set */ |
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L_INT nStatus; |
/* status variable */ |
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L_VOID * pValue; |
/* pointer to the original value */ |
Called for each property set using LTwain::SetProperties.
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Parameter |
Description |
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uCap |
The capability being set. For more information on capability values, refer to the Twain 1.9 Specification, available at www.twain.org. |
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nStatus |
This variable holds the value of the error that occurred while the property was being set. |
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pValue |
Pointer to the original value. The user can cast this depending on the type of the property, and modify it. |
Returns
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SUCCESS |
The function was successful. |
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TWAIN_SUCCESS_RETRY |
Retry with the new value in *pValue parameter. |
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TWAIN_SUCCESS_ABORT |
Abort the negotiation. |
Comments
This callback function will be enabled only if you enabled the callback functions by calling LBase::EnableCallBack(TRUE).
The user should not free the pValue parameter within this callback.
Required DLLs and Libraries
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LTTWN 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
For an example, refer to LTwain::GetProperties.
