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the TDx_Library
the TDx9_Library
- Description
The FindDevice() method will retrieve the instance GUID of a newly attached device after the application has recieved a Win32 device management notification.
More information about device arrival notifications can be found by looking up the DBT_DEVICEARRIVAL event in the Win32 SDK.
Error values that can be generated are:
DIERR_DEVICENOTREG
- Parameters
Class
The Class parameter identifies the device class for the device being located.
The device class GUID can be obtained from the device arrival notification.
Name
The Name parameter defines the name of the device.
The device name can be obtained from the device arrival notification.
Instance
The Instance parameter references a GUID for storing the retrieved device instance GUID if the method finds the device and returns successfully.
Once obtained, this GUID can be passed to TDx_Input::CreateDevice() to create an interface for the device.
If no device exists, the Instance parameter will reference a NULL GUID.
- See Also
- Top
TDx_Input_Library v1.90 Component Reference
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[ TDx_Input::FindDevice() ] [ next: GetDeviceStatus() ] [ prev: EnumDevices() ] public:
virtual bool __fastcall FindDevice( REFGUID pClass, AnsiString* pName, GUID* pInstance );
TDX_INPUT::FINDDEVICE()
[ component method ]
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