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SendDriverMessage

Sends the specified message to the installable driver.

LRESULT SendDriverMessage(HDRVR hdrvr, UINT msg, LONG lParam1, 
    LONG lParam2);
 

Parameters

hdrvr

Handle of the installable driver instance. The handle must been previously created by using the OpenDriver function.

msg

Driver message value. It can be a custom message value or one of these standard message values:

DRV_QUERYCONFIGURE Queries an installable driver about whether it supports the DRV_CONFIGURE message and can display a configuration dialog box.
DRV_CONFIGURE Notifies an installable driver that it should display a configuration dialog box. (This message should only be sent if the driver returns a nonzero value when the DRV_QUERYCONFIGURE message is processed.)
DRV_INSTALL Notifies an installable driver that it has been successfully installed.
DRV_REMOVE Notifies an installable driver that it is about to be removed from the system.

lParam1 and lParam2

32-bit message-dependent information.

Return Value

Returns nonzero if successful or zero otherwise.

Requirements

**  Windows NT/2000:** Requires Windows NT 3.1 or later.
**  Windows 95/98:** Requires Windows 95 or later.
**  Header:** Declared in Mmsystem.h.
**  Library:** Use Winmm.lib.

See Also

Installable Drivers, Installable Driver Functions