![]() ![]() ![]() For more information about other valid Flags values, see ActivateDeviceEx. When implementing the stream interface, replace XXX with a prefix appropriate for your implementation or use undecorated entry point names in conjunction with DEVFLAGS_NAKEDENTRIES. This might involve preparing the device for reading or writing and initializing data structures it uses for operation.ĭevice Manager uses the XXX prefix. When this function executes, your device should allocate the resources that it needs for each open context and prepare for operation. This function returns zero if the device cannot be opened. This identifier is passed into the XXX_Read (Device Manager), XXX_Write (Device Manager), XXX_Seek (Device Manager), and XXX_IOControl (Device Manager) functions. If your device can be opened multiple times, use this handle to identify each open context. ![]() This function returns a handle that identifies the open context of the device to the calling application. The share mode is a combination of read and write access sharing from CreateFile. As you’ve probably guessed from the previous method, the file that launches Device Manager in Windows is called devmgmt.msc. The access is a combination of read and write access from CreateFile. The XXX_Init (Device Manager) function creates and returns this handle. DWORDXXX_Open(DWORDhDeviceContext,DWORD AccessCode,DWORD ShareMode) An application indirectly invokes this function when it calls the CreateFile function to open special device file names. The WinCE CAB Manager is the ultimate utility for developers of. ![]() This function opens a device for reading, writing, or both. ![]()
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