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Added mousewheel support.

This commit is contained in:
Hannu Valtonen 2005-04-11 14:22:21 +00:00 committed by Alexandre Julliard
parent b4db6533a0
commit 06d9713f3d
1 changed files with 21 additions and 0 deletions
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21
dlls/riched20/editor.c
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@ -1172,6 +1172,27 @@ LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lP
}
break;
}
case WM_MOUSEWHEEL:
{
int gcWheelDelta = 0, nPos = editor->nScrollPosY;
UINT pulScrollLines;
SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8;
if(nPos>=editor->nTotalLength)
nPos = editor->nTotalLength - 1;
if (nPos<0)
nPos = 0;
if (nPos != editor->nScrollPosY) {
ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
editor->nScrollPosY = nPos;
SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
UpdateWindow(hWnd);
}
break;
}
case WM_SIZE:
{
ME_MarkAllForWrapping(editor);