JCL Help:IsHandleValid
JCL Help: IsHandleValid Function
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Summary
Tests whether a handle is valid.
Pascal
function IsHandleValid(Handle: THandle): Boolean;
Parameters
| Parameters | Description |
| Handle: THandle | The handle to test for validity. |
Return Value
If the specified handle is valid the function returns True. If the specified handle is invalid the function returns False.
Description
The IsHandleValid determines whether a handle is valid. The handle can point to any kind of Win32 object such as a file, mutex or console screen buffer. Note that the result of this function is only an indication of whether the handle points to a valid object. Since handles are reused by Win32 it is possible that the handle actually points to a different object than you thought. More reason to always set handles to 0 or INVALID_HANDLE_VALUE immediately after you close it.
About
Unit
Donator
Marcel van Brakel
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