Hinweis
Für den Zugriff auf diese Seite ist eine Autorisierung erforderlich. Sie können versuchen, sich anzumelden oder das Verzeichnis zu wechseln.
Für den Zugriff auf diese Seite ist eine Autorisierung erforderlich. Sie können versuchen, das Verzeichnis zu wechseln.
Drawing and text output require a surface on which to draw. This surface is created by the DrvEnableSurface function and is referred to as the primary surface. This surface is also known as the on-screen surface, because it appears in the video display. There is only one primary surface enabled per PDEV although a driver can support several PDEVs. Drivers that support the DrvCreateDeviceBitmap function can create and use additional surfaces. These bitmap surfaces are referred to as secondary surfaces or off-screen surfaces. For either type of surface, the driver is responsible for determining the type of drawing operations it supports.