There are 5 capability negotiation operation types defined by Dynamic TWAIN: CapGet(), CapGetCurrent(), CapGetDefault(), CapSet(), CapReset().
| CapGet() | Returns the Source's Current, Default and Available Values for a specified capability. These values reflect previous CapSet() operations on the capability, or Source's automatic changes. |
| CapGetCurrent() | Returns the Source's Current Value for the specified capability. The Current Value reflects previous CapSet() operations on the capability, or Source's automatic changes. |
| CapGetDefault() | Returns the Source's Default Value. This is the Source's preferred default value. The Source's Default Value cannot be changed. |
| CapSet() | Changes the Current Value(s) and Available Values of the specified capability to those specified by the application. Current Values are set when the container is a TW_ONEVALUE or TW_ARRAY. Available and Current Values are set when the container is a TW_ENUMERATION or TW_RANGE. |
| CapReset() | Change the Current Value of the specified capability back to its power-on value. |
CapType property
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