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USING THE ST7 USB DEVICE FIRMWARE UPGRADE DEVELOPMENT KIT (DFU-DK)

4.3.19 STDFU_HandleDeviceChange

4.3.19.1 Prototype

BOOL STDFU_HandleDeviceChange

(WPARAM wParam,

LPARAM lParam);

4.3.19.2 Description

This function must be called by the application when receiving a WM_DEVICECHANGE.

4.3.19.3 Parameters

wParam: device-change event that could be for example a DBT_DEVICEARRIVAL or a

BT_DEVICEREMOVECOMPLETE event etc.

lParam: event-specific data.

4.3.19.4 Returned value

STDFU_NOERROR in case of success, otherwise (Error Code).

4.3.19.5 Remarks

In any application or GUI working with a driver and thus with a device, you first have to identify

and specify the device or the type of the device that you are dealing with and for which a

window will receive notifications.

Once this has been done, the WM_DEVICECHANGE device message will notify the applica-

tion of a change to the hardware configuration of a device.

Note: For more details about this mechanism, please refer to Microsoft MSDN Help, you can

also refer to the source files of the DFU demonstrator to see an example of implementation.