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IsGUIThread function
Determines whether the calling thread is already a GUI thread. It can also optionally convert the thread to a GUI thread.
Syntax
BOOL WINAPI IsGUIThread( _In_ BOOL bConvert );
Parameters
- bConvert [in]
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Type: BOOL
If TRUE and the thread is not a GUI thread, convert the thread to a GUI thread.
Return value
Type: Type: BOOL
The function returns a nonzero value in the following situations:
- If the calling thread is already a GUI thread.
- If bConvert is TRUE and the function successfully converts the thread to a GUI thread.
Otherwise, the function returns zero.
If bConvert is TRUE and the function cannot successfully convert the thread to a GUI thread, IsGUIThread returns ERROR_NOT_ENOUGH_MEMORY.
Requirements
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Minimum supported client |
Windows XP [desktop apps only] |
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Minimum supported server |
Windows Server 2003 [desktop apps only] |
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Header |
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Library |
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DLL |
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See also
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