DOC: Interrupt 2Fh Function 1684h Name-based Usage |
Q175378
The information in this article applies to:
- Microsoft Win32 Device Driver Kit (DDK) Windows 95, on platform(s):
- the operating system: Microsoft Windows 95
SUMMARY
The Windows 95 Device Driver Kit documentation describes how a 16-bit ring 3 application can retrieve the entry point for a VxD's service functions, by specifying the VxD's unique device ID. The documentation omitted an alternate way to specify a VxD by indicating its VxD name. The sample below demonstrates how to do this:
xor bx, bx ; bx = 0 indicates name-based les di, lpName ; Name of device being queried int 2Fh mov word ptr [DevAddr], di mov word ptr [DevAddr+2], es ; ES:DI contains entry point addr or di, word ptr [DevAddr+2] ; or contains 0:0 on error jz Error
In the documentation of the parameters, please add
DeviceID
Identifies a virtual device. If this value is zero, then the ES:DI registers point to an 8-character space-padded case-sensitive device name.
Keywords : kbdocerr
Issue type :
Technology : kbAudDeveloper kbWinDDKSearch kbWin32sSearch kbWin32DDKSearch
Last Reviewed: December 7, 2000 |
