CBaseWindow Class

Microsoft DirectX 9.0

CBaseWindow Class

The CBaseWindow class is a base class for managing windows. Video renderers can use this class to create video windows. To use this class, create a derived class that inherits from CBaseWindow. In the derived class:

Implement the pure virtual method CBaseWindow::GetClassWindowStyles, which defines the window styles.
Override the CBaseWindow::OnReceiveMessage method, which handles window messages.
Implement a destructor that calls the CBaseWindow::DoneWithWindow method.

Before using an instance of the derived class, call the CBaseWindow::PrepareWindow method.

Requirements

Header: Declared in Winutil.h; include Streams.h.

Library: Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

Protected Member Variables
m_hInstance	Handle to the module instance.
m_hwnd	Handle to the object's window.
m_hdc	Handle to the window's device context.
m_Width	Width of the client area, in pixels.
m_Height	Height of the client area, in pixels.
m_bActivated	Flag that specifies whether the window has been activated.
m_pClassName	Static string that contains the name of the window class.
m_ClassStyles	Class styles for the window.
m_WindowStyles	Window styles for the window.
m_WindowStylesEx	Extended window styles for the window.
m_ShowStageMessage	Private message that brings the window to the foreground.
m_ShowStageTop	Private message that sets the window style to WS_EX_TOPMOST.
m_RealizePalette	Private message that realizes the palette.
m_MemoryDC	Handle to the memory device context.
m_hPalette	Handle to the window's palette.
m_bNoRealize	Flag that specifies whether the window should realize its palette.
m_bBackground	Flag that specifies whether the palette should be a background palette.
m_bRealizing	Flag that specifies whether a new palette is being realized.
m_WindowLock	Critical section, to serialize access to the object.
m_bDoGetDC	Flag that specifies whether to retrieve the device context.
m_bDoPostToDestroy	Flag that specifies whether the window posts or sends its destruction message.
Protected Methods
OnPaletteChange	Handles palette-change messages. Virtual.
Public Methods
CBaseWindow	Constructor method.
DoneWithWindow	Destroys the window. Virtual.
PrepareWindow	Creates the window. Virtual.
InactivateWindow	Inactivates the window. Virtual.
ActivateWindow	Sizes the window according to the requirements of the derived class. Virtual.
OnSize	Handles WM_SIZE messages. Virtual.
OnClose	Handles WM_CLOSE messages. Virtual.
GetDefaultRect	Retrieves the default size of the client area. Virtual.
UninitialiseWindow	Releases the window's resources. Virtual.
InitialiseWindow	Initializes the window. Virtual.
CompleteConnect	Notifies the window that the renderer's input pin has been connected.
DoCreateWindow	Creates the window.
PerformanceAlignWindow	Aligns the window to a DWORD boundary, for maximum performance.
DoShowWindow	Sets the window's show state.
PaintWindow	Causes the window to be repainted.
DoSetWindowForeground	Brings the window to the foreground.
SetPalette	Installs a palette for the window. Virtual.
SetRealize	Specifies whether the window realizes palettes.
DoRealisePalette	Realizes the window's current palette. Virtual.
PossiblyEatMessage	Enables a derived class to forward messages to another window. Virtual.
GetWindowWidth	Retrieves the current width of the window.
GetWindowHeight	Retrieves the current height of the window.
GetWindowHWND	Retrieves a handle to the window.
GetMemoryHDC	Retrieves a handle to the memory device context.
GetWindowHDC	Retrieves a handle to the window's device context.
OnReceiveMessage	Handles window messages. Virtual.
UnsetPalette	Deletes the window's current palette and restores the default system palette.
Pure Virtual Methods
GetClassWindowStyles	Retrieves the window's class styles and window styles.

See Also