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CallbackDisplayConfigChangedSet method |
  
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CallbackDisplayConfigChangedSet method |
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Remarks
Sets a callback for receiving notification whenever whenever the configuration of the system display is changed.
For further details about callback delegates see the How to synchronize the container application with the API tutorial.
Syntax
[Visual Basic] Public Function CallbackDisplayConfigChangedSet ( function as CallbackDisplayConfigChanged ) as enumErrorCodes |
[C#] public enumErrorCodes CallbackDisplayConfigChangedSet ( CallbackDisplayConfigChanged function ); |
[C++] public: enumErrorCodes CallbackDisplayConfigChangedSet ( CallbackDisplayConfigChanged function ); |
Parameter |
Description |
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function |
Pointer to the callback function that will receive the event. Remember that callback functions must be as fast as possible in order to avoid slowing down overall performances. |
when using the API from Unmanaged C++ through COM interaction, where the client application is totally unaware about .NET delegates, you should use the "Ptr" version of the method which allows passing the pointer to the callback function:
[Unmanaged C++] enumErrorCodes CallbackDisplayConfigChangedSetPtr ( (UINT_PTR) functionPointer ); |
Parameter |
Description |
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functionPointer |
Pointer to the callback function. See the Adding the API to an unmanaged Visual C++ project tutorial for details about usage of the "Ptr" version of these methods. |
Return value
Value |
Meaning |
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Negative value |
An error occurred. Check the LastError property value in order to see the last error. |
enumErrorCodes.ERR_NOERROR (0) |
The method call was successful. |
