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(); }