display.h File Reference

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Go to the source code of this file.

Functions
NTSTATUS NTAPI	InitVideo (VOID)

Variables
BOOL	gbBaseVideo

Function Documentation

InitVideo()

NTSTATUS NTAPI InitVideo

(

VOID

)

Definition at line 151 of file display.c.

{
    NTSTATUS Status;
    HKEY hkey;
 
    TRACE("----------------------------- InitVideo() -------------------------------\n");
 
    /* Check if VGA mode is requested, by finding the special volatile key created by VIDEOPRT */
    Status = RegOpenKey(L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\GraphicsDrivers\\BaseVideo", &hkey);
    if (NT_SUCCESS(Status))
        ZwClose(hkey);
    gbBaseVideo = NT_SUCCESS(Status);
    if (gbBaseVideo)
        ERR("VGA mode requested.\n");
 
    /* Initialize all display devices */
    Status = EngpUpdateGraphicsDeviceList();
    if (!NT_SUCCESS(Status))
        return Status;
 
    /* Check if we had any success */
    if (!gpPrimaryGraphicsDevice)
    {
        /* Check if there is a VGA device we skipped */
        if (gpVgaGraphicsDevice)
        {
            /* There is, use the VGA device */
            gpPrimaryGraphicsDevice = gpVgaGraphicsDevice;
        }
        else
        {
            ERR("No usable display driver was found.\n");
            return STATUS_UNSUCCESSFUL;
        }
    }
 
    InitSysParams();
 
    return STATUS_SUCCESS;
}

Referenced by UserInitialize().

Variable Documentation

gbBaseVideo

BOOL gbBaseVideo

extern

Definition at line 12 of file display.c.

Referenced by EngpUpdateGraphicsDeviceList(), and InitVideo().