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An entry point to the symbol server DLL.
The PSYMBOLSERVERCALLBACKPROC type defines a pointer to this callback function. SymbolServerCallback is a placeholder for the library-defined function name.
Syntax
PSYMBOLSERVERCALLBACKPROC Psymbolservercallbackproc;
BOOL Psymbolservercallbackproc(
[in] UINT_PTR action,
[in] ULONG64 data,
[in] ULONG64 context
)
{...}
Parameters
[in] action
The action code. This parameter can be one of the following values.
| Value | Meaning |
|---|---|
|
Provide debug trace information. The data parameter is a pointer to an IMAGEHLP_CBA_EVENT structure.
DbgHelp 6.0 and earlier: This value is not supported. |
|
Cancel the file copy. The data parameter is a ULONG64 value. If this value is zero, continue the operation. Otherwise, cancel the operation.
DbgHelp 6.0 and earlier: This value is not supported. |
|
The data parameter is the size of the file to be provided by the system. |
|
Provide debug trace information. The data parameter is a text string. |
[in] data
The format of this parameter depends on the value of the action parameter.
[in] context
The context information provided by calling SymbolServerSetOptions with SSRVOPT_SETCONTEXT.
Return value
To indicate success, return TRUE.
To indicate failure, return FALSE and call the SetLastError function to indicate an error condition. If you do not handle a particular action code, you should also return FALSE. (Returning TRUE in this case may have unintended consequences.)
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | dbghelp.h |
| Redistributable | DbgHelp.dll 5.1 or later |