TOOLBARCALLBACK function
#include "LtTLB.h"
L_INT EXT_CALLBACK YourFunction(pToolbar, nButtonID, dwData, pUserData )
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pTOOLBARHANDLE pToolbar; |
/* pointer to a toolbar handle */ |
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L_UINT nButtonID; |
/* button ID */ |
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L_UINT32 dwData; |
/* reserved */ |
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L_VOID * pUserData; |
/* pointer to additional data */ |
Handles each action that occurs in the toolbar.
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Parameter |
Description |
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pToolbar |
Pointer to a toolbar handle. |
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nButtonID |
An integer that identifies the button that was responsible for creating the toolbar event. |
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dwData |
Reserved for future use. |
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pUserData |
A void pointer that you can use it to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the function that uses this callback function. (This is the same pointer that you pass in the pUserData parameter of the calling function.) |
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Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function. |
Returns
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SUCCESS |
The function was successful. |
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< 1 |
An error occurred. Refer to Return Codes |
Comments
This function is called for each event that occurs in the toolbar. To receive notification of toolbar events the callback function must be set using L_TBSetCallback. To determine that current callback function that is handling toolbar events, call L_TBGetCallback.
Required DLLs and Libraries
LTTLB
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 L_TBSetCallback.