{{page>en:templates:win16api}}

====== OpenDriver ======

===== Brief =====

Opens an installable driver.

===== Syntax =====

HDRVR WINAPI OpenDriver(LPCSTR szDriverName, LPCSTR szSectionName, LPARAM lParam);

===== Parameters =====

  * **szDriverName**  
  Far pointer to driver name.
  * **szSectionName**  
  Far pointer to section name in SYSTEM.INI.
  * **lParam**  
  Additional parameter.

===== Return Code =====

Returns handle to the driver, or NULL if failed.

===== Notes =====

Installable drivers provide extended functionality beyond standard Windows API.

===== C Binding =====
<code c>
HDRVR hDriver = OpenDriver("MYDRV", "MyDriverSection", 0);
</code>

===== MASM Binding =====
<code asm>
push lParam
push seg szSectionName    ; szSectionName segment
push offset szSectionName ; szSectionName offset
push seg szDriverName     ; szDriverName segment
push offset szDriverName  ; szDriverName offset
call OpenDriver
</code>

===== See also =====

[[en:docs:win16:api:user:CLOSEDRIVER]], [[en:docs:win16:api:user:SENDDRIVERMESSAGE]]