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Update ScintillaWin.cxx

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This commit is contained in:
stevesmiles 2019-07-18 15:12:34 -04:00
parent 9ede778818
commit 36d873d78d
1 changed files with 9 additions and 0 deletions
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9
scintilla/win32/ScintillaWin.cxx
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@ -1447,6 +1447,15 @@ sptr_t ScintillaWin::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam
// Either SCROLL or ZOOM. We handle the wheel steppings calculation
wheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
// Hold RIGHT MOUSE BUTTON and SCROLL to cycle through UNDO history
if (wParam & MK_RBUTTON) {
if (wheelDelta >= 0)
Redo();
else
Undo();
}
if (std::abs(wheelDelta) >= WHEEL_DELTA && linesPerScroll > 0) {
Sci::Line linesToScroll = linesPerScroll;
if (linesPerScroll == WHEEL_PAGESCROLL)