Fix a typo.

[reactos.git] / reactos / subsys / win32k / objects / dc.c

diff --git a/reactos/subsys/win32k/objects/dc.c b/reactos/subsys/win32k/objects/dc.c
index 94cc363..e44b5df 100644 (file)
--- a/reactos/subsys/win32k/objects/dc.c
+++ b/reactos/subsys/win32k/objects/dc.c
@@ -139,7 +139,7 @@ NtGdiCancelDC(HDC  hDC)
 }
 
 HDC STDCALL
-NtGdiCreateCompatableDC(HDC hDC)
+NtGdiCreateCompatibleDC(HDC hDC)
 {
   PDC  NewDC, OrigDC;
   HBITMAP  hBitmap;
@@ -661,6 +661,61 @@ IntPrepareDriverIfNeeded()
    return (PrimarySurface.PreparedDriver ? TRUE : IntPrepareDriver());
 }
 
+static BOOL FASTCALL
+PrepareVideoPrt()
+{
+   PIRP Irp;
+   NTSTATUS Status;
+   IO_STATUS_BLOCK Iosb;
+   BOOL Prepare = TRUE;
+   ULONG Length = sizeof(BOOL);
+   PIO_STACK_LOCATION StackPtr;
+   LARGE_INTEGER StartOffset;
+   PFILE_OBJECT FileObject = PrimarySurface.VideoFileObject;
+   PDEVICE_OBJECT DeviceObject = FileObject->DeviceObject;
+
+   DPRINT("PrepareVideoPrt() called\n");
+
+   KeClearEvent(&PrimarySurface.VideoFileObject->Event);
+
+   ObReferenceObjectByPointer(FileObject, 0, IoFileObjectType, KernelMode);
+
+   StartOffset.QuadPart = 0;
+   Irp = IoBuildSynchronousFsdRequest(IRP_MJ_WRITE,
+                                      DeviceObject,
+                                      (PVOID) &Prepare,
+                                      Length,
+                                      &StartOffset,
+                                      NULL,
+                                      &Iosb);
+   if (NULL == Irp)
+   {
+      return FALSE;
+   }
+
+   /* Set up IRP Data */
+   Irp->Tail.Overlay.OriginalFileObject = FileObject;
+   Irp->RequestorMode = KernelMode;
+   Irp->Overlay.AsynchronousParameters.UserApcRoutine = NULL;
+   Irp->Overlay.AsynchronousParameters.UserApcContext = NULL;
+   Irp->Flags |= IRP_WRITE_OPERATION;
+
+   /* Setup Stack Data */
+   StackPtr = IoGetNextIrpStackLocation(Irp);
+   StackPtr->FileObject = PrimarySurface.VideoFileObject;
+   StackPtr->Parameters.Write.Key = 0;
+
+   Status = IoCallDriver(DeviceObject, Irp);
+
+   if (STATUS_PENDING == Status)
+   {
+      KeWaitForSingleObject(&FileObject->Event, Executive, KernelMode, TRUE, 0);
+      Status = Iosb.Status;
+   }
+
+   return NT_SUCCESS(Status);
+}
+
 BOOL FASTCALL
 IntCreatePrimarySurface()
 {
@@ -674,6 +729,11 @@ IntCreatePrimarySurface()
       return FALSE;
    }
 
+   if (! PrepareVideoPrt())
+   {
+      return FALSE;
+   }
+
    DPRINT("calling EnableSurface\n");
    /* Enable the drawing surface */
    PrimarySurface.Handle =
@@ -808,7 +868,7 @@ IntGdiCreateDC(PUNICODE_STRING Driver,
   if ((hNewDC = DC_FindOpenDC(Driver)) != NULL)
   {
     hDC = hNewDC;
-    return  NtGdiCreateCompatableDC(hDC);
+    return  NtGdiCreateCompatibleDC(hDC);
   }
 
   if (Driver != NULL && Driver->Buffer != NULL)
@@ -927,7 +987,9 @@ NtGdiCreateDC(PUNICODE_STRING Driver,
     }
   }
 
-  Ret = IntGdiCreateDC(&SafeDriver, &SafeDevice, NULL, &SafeInitData, FALSE);
+  Ret = IntGdiCreateDC(NULL == Driver ? NULL : &SafeDriver,
+                       NULL == Device ? NULL : &SafeDevice, NULL,
+                       NULL == InitData ? NULL : &SafeInitData, FALSE);
 
   return Ret;
 }
@@ -1441,7 +1503,7 @@ NtGdiSetDCState ( HDC hDC, HDC hDCSave )
 INT FASTCALL
 IntGdiGetDeviceCaps(PDC dc, INT Index)
 {
-  INT ret;
+  INT ret = 0;
   POINT  pt;
 
   /* Retrieve capability */