WM_RENDERFORMAT

The WM_RENDERFORMAT message is sent to the clipboard owner if it has delayed rendering a specific clipboard format and if an application has requested data in that format. The clipboard owner must render data in the specified format and place it 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_RENDERFORMAT
  WPARAM wParam,   // clipboard format (UINT)
  LPARAM lParam    // not used
);

Parameters

wParam

Specifies the clipboard format to be rendered.

lParam

This parameter is not used.

Return Values

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

Remarks

When responding to a WM_RENDERFORMAT message, the clipboard owner must not open the clipboard before calling 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, SetClipboardData, WM_RENDERALLFORMATS