IWDFIoRequest2::IsFromUserModeDriver method (wudfddi.h)
[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]
The IsFromUserModeDriver method indicates whether an I/O request came from a user-mode driver or an application.
Syntax
BOOL IsFromUserModeDriver();
Return value
A Boolean value that, if TRUE, indicates that the current I/O request is from a user-mode driver. If this value is FALSE, the current I/O request came from an application.
Remarks
If your driver supports kernel-mode clients, it should call IsFromUserModeDriver only if IWDFIoRequest2::GetRequestorMode returns WdfUserMode.
The UMDF 2 equivalent of this method is WdfRequestIsFromUserModeDriver.
Examples
For a code example that uses IsFromUserModeDriver, see the example at IWDFIoRequest2::GetRequestorMode.
Requirements
| Requirement | Value |
|---|---|
| End of support | Unavailable in UMDF 2.0 and later. |
| Target Platform | Desktop |
| Minimum UMDF version | 1.9 |
| Header | wudfddi.h (include Wudfddi.h) |
| DLL | WUDFx.dll |