BOOL FASTCALL
co_IntInitializeDesktopGraphics(VOID)
{
TEXTMETRICW tmw;
UNICODE_STRING DriverName = RTL_CONSTANT_STRING(L"DISPLAY");
PDESKTOP pdesk;
ScreenDeviceContext = IntGdiCreateDC(&DriverName, NULL, NULL, NULL, FALSE);
if (NULL == ScreenDeviceContext)
{
IntDestroyPrimarySurface();
return FALSE;
}
GreSetDCOwner(ScreenDeviceContext, GDI_OBJ_HMGR_PUBLIC);
if (! IntCreatePrimarySurface())
{
return FALSE;
}
hSystemBM = NtGdiCreateCompatibleDC(ScreenDeviceContext);
NtGdiSelectFont(hSystemBM, NtGdiGetStockObject(SYSTEM_FONT));
GreSetDCOwner(hSystemBM, GDI_OBJ_HMGR_PUBLIC);
/* Update the SERVERINFO */
gpsi->aiSysMet[SM_CXSCREEN] = gppdevPrimary->gdiinfo.ulHorzRes;
gpsi->aiSysMet[SM_CYSCREEN] = gppdevPrimary->gdiinfo.ulVertRes;
gpsi->Planes = NtGdiGetDeviceCaps(ScreenDeviceContext, PLANES);
gpsi->BitsPixel = NtGdiGetDeviceCaps(ScreenDeviceContext, BITSPIXEL);
gpsi->BitCount = gpsi->Planes * gpsi->BitsPixel;
gpsi->dmLogPixels = NtGdiGetDeviceCaps(ScreenDeviceContext, LOGPIXELSY);
if (NtGdiGetDeviceCaps(ScreenDeviceContext, RASTERCAPS) & RC_PALETTE)
{
gpsi->PUSIFlags |= PUSIF_PALETTEDISPLAY;
}
else
gpsi->PUSIFlags &= ~PUSIF_PALETTEDISPLAY;
// Font is realized and this dc was previously set to internal DC_ATTR.
gpsi->cxSysFontChar = IntGetCharDimensions(hSystemBM, &tmw, (DWORD*)&gpsi->cySysFontChar);
gpsi->tmSysFont = tmw;
/* Put the pointer in the center of the screen */
gpsi->ptCursor.x = gpsi->aiSysMet[SM_CXSCREEN] / 2;
gpsi->ptCursor.y = gpsi->aiSysMet[SM_CYSCREEN] / 2;
/* Attach monitor */
UserAttachMonitor((HDEV)gppdevPrimary);
/* Setup the cursor */
co_IntLoadDefaultCursors();
/* Show the desktop */
pdesk = IntGetActiveDesktop();
ASSERT(pdesk);
co_IntShowDesktop(pdesk, gpsi->aiSysMet[SM_CXSCREEN], gpsi->aiSysMet[SM_CYSCREEN], TRUE);
return TRUE;
}
VOID FASTCALL
IntEndDesktopGraphics(VOID)
{
if (NULL != ScreenDeviceContext)
{ // No need to allocate a new dcattr.
GreSetDCOwner(ScreenDeviceContext, GDI_OBJ_HMGR_POWNED);
GreDeleteObject(ScreenDeviceContext);
ScreenDeviceContext = NULL;
}
IntHideDesktop(IntGetActiveDesktop());
IntDestroyPrimarySurface();
}