CWnd::Print

  • 项目

void Print( CDC* pDC**, DWORD** dwFlags ) const;

Parameters

pDC

A pointer to a device context.

dwFlags

Specifies the drawing options. This parameter can be one or more of these flags:

  • PRF_CHECKVISIBLE   Draw the window only if it is visible.

  • PRF_CHILDREN   Draw all visible children windows.

  • PRF_CLIENT   Draw the client area of the window.

  • PRF_ERASEBKGND   Erase the background before drawing the window.

  • PRF_NONCLIENT   Draw the nonclient area of the window.

  • PRF_OWNED   Draw all owned windows.

Remarks

Call this member function to draw the current window in the specified device context, which is most commonly in a printer device context.

CWnd::DefWindowProc function processes this message based on which drawing option is specified:

  • If PRF_CHECKVISIBLE is specified and the window is not visible, do nothing.

  • If PRF_NONCLIENT is specified, draw the nonclient area in the given device context.

  • If PRF_ERASEBKGND is specified, send the window a message.

  • If PRF_PRINTCLIENT is specified, send the window a message.

  • If PRF_PRINTCHILDREN is set, send each visible child window a message.

  • If PRF_OWNED is set, send each visible owned window a WM_PRINT message.

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