WM_RENDERALLFORMATS

The WM_RENDERALLFORMATS message is sent to the clipboard owner before it is destroyed, if the clipboard owner has delayed rendering one or more clipboard formats. For the content of the clipboard to remain available to other applications, the clipboard owner must render data in all the formats it is capable of generating, and place the data on the clipboard by calling the SetClipboardData function.

A window receives this message through its WindowProc function.

LRESULT CALLBACK WindowProc(
  HWND hwnd,       // handle to window
  UINT uMsg,       // WM_RENDERALLFORMATS
  WPARAM wParam,   // not used
  LPARAM lParam    // not used
);

Parameters

This message has no parameters.

Return Values

If an application processes this message, it should return zero.

Remarks

When responding to a WM_RENDERALLFORMATS message, the clipboard owner must call the OpenClipboard and EmptyClipboard functions before calling SetClipboardData.

When the application returns, the system removes any unrendered formats from the list of available clipboard formats. For information about delayed rendering, see SetClipboardData.

Requirements

  Windows NT/2000: Requires Windows NT 3.1 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Winuser.h; include Windows.h.

See Also

Clipboard Overview, Clipboard Messages, EmptyClipboard, OpenClipboard, SetClipboardData, WM_RENDERFORMAT