SendDriverMessage function (mmiscapi.h)

Sends the specified message to the installable driver.

Syntax

LRESULT SendDriverMessage(
  [in]      HDRVR  hDriver,
  [in]      UINT   message,
  [in, out] LPARAM lParam1,
  [in, out] LPARAM lParam2
);

[in] hDriver

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

[in] message

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

Value	Meaning
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.

[in, out] lParam1

32-bit message-dependent information.

[in, out] lParam2

32-bit message-dependent information.

Returns nonzero if successful or zero otherwise.

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only],Installable Drivers, Installable Driver Functions
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	mmiscapi.h (include Mmiscapi.h, Windows.h)
Library	Winmm.lib
DLL	Winmm.dll