Книга: Microsoft Windows Embedded CE 6.0 Exam Preparation Kit

Lesson Summary

Lesson Summary

To increase the portability of a device driver, you can configure the registry entries in the driver's registry subkey. Windows Embedded CE provides several registry helper functions that you can then use to retrieve these settings, such as DDKReg_GetIsrInfo, DDKReg_GetWindowInfo, and DDKReg_GetPciInfo. These helper functions query specific information for installable ISRs, memory-mapped windows, and PCI device instance information, yet you can also call RegQueryValueEx to retrieve values from other registry entries. However, to use any of these registry functions, you must first obtain a handle to the driver's registry subkey by calling OpenDeviceKey. OpenDeviceKey expects a registry path, which Device Manager passes to the driver in the XXX_Init function call. Do not forget to close the registry handle when it is no longer needed.

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