mirror driver 驱动源码, 从win2000 ddk 的源码示例里拿出来的

To install: 1. Copy mirror.dll to %winnt%\system32, mirror.sys to %winnt%\system32\drivers 2. These are added during .inf file installation: Sets registry values (where '#' is a number): HKLM\System\CurrentControlSet\Services\mirror device#\Device Description "Microsoft Mirror Driver" (SZ) device#\Installed Display Drivers "mirror" (MULTI_SZ) device#\MirrorDriver 0x1 (DWORD) device#\xxx possibly other keys enum\xxx keys for enumerating devices 3. When invoking the mirrored driver on a mirrored device: To change the settings for your mirrored device, you must know the '\\.\DISPLAY#' name associated with your mirrored display. In the case of multiple instances, '#' will be a different number. This can be found by iterating through the available display devices using EnumDisplayDevices(). For reference/testing only, this information can be found under the following key: HKLM\Hardware\DeviceMap\Video To attach the mirrored device to the desktop pdev list, you must add a registry value 'Attach.ToDesktop' = 0x1. Subsequent ChangeDisplaySettings() will then dynamically load the mirrored display driver for use. HKLM\SYSTEM\CurrentControlSet\Hardware Profiles\Current\System\CurrentControlSet\ Services\mirror [where 'mirror' is short name of mirrored surface] device#\Attach.ToDesktop 0x1 (DWORD) To disable the attachment, set 'Attach.ToDesktop' to 0x0. Otherwise your driver will invoked again at boot up time. There are also other Default.Settings values saved under this key, use ChangeDisplaySettings() with dwFlags=CDS_UPDATEREGISTRY to properly save them. To create a DC, device managed bitmap, etc. using the mirrored surface, use the ordinary GDI APIs. To create the DC specify, use the following: HDC hdc = CreateDC("DISPLAY", // driver name deviceName, // example 'mirror' device name NULL, NULL); See DDK sample for a working demonstration. Minimum requirements for barebones mirrored display driver: DrvEnableDriver [exported] DrvEnablePDEV DrvCompletePDEV DrvDisablePDEV DrvEnableSurface DrvDisableSurface DrvBitBlt DrvCopyBits DrvCreateDeviceBitmap DrvDeleteDeviceBitmap DrvTextOut Minimum requirements for barebones mirrored miniport driver: DriverEntry [exported] HwFindAdapter HwInitialize HwStartIO Since there is no physical display device associated with a mirrored surface, these routines can return positive results.