The WM_VSCROLLCLIPBOARD message is sent to the clipboard owner by a clipboard viewer window when the clipboard contains data in the CF_OWNERDISPLAY format and an event occurs in the clipboard viewer's vertical scroll bar. The owner should scroll the clipboard image and update the scroll bar values.
WM_VSCROLLCLIPBOARD
hwndViewer = (HWND) wParam; // handle of clipboard viewer window
nScrollCode = (int) LOWORD(lParam); // scroll bar code
nPos = (int) HIWORD(lParam); // scroll box position
Value | Meaning |
---|---|
SB_BOTTOM | Scroll to lower right. |
SB_ENDSCROLL | End scroll. |
SB_LINEDOWN | Scroll one line down. |
SB_LINEUP | Scroll one line up. |
SB_PAGEDOWN | Scroll one page down. |
SB_PAGEUP | Scroll one page up. |
SB_THUMBPOSITION | Scroll to absolute position. The current position is specified by the nPos parameter. |
SB_TOP | Scroll to upper left. |
If an application processes this message, it should return zero.
The clipboard owner can use the ScrollWindow function to scroll the image in the clipboard viewer window and invalidate the appropriate region.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in winuser.h.
Clipboard Overview, Clipboard Messages, ScrollWindow