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swell-wnd-generic.cpp: mousewheel scroll on comboboxes (mirror Windows behavior) #6

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swell-wnd-generic.cpp: mousewheel scroll on comboboxes (mirror Windows behavior) #6

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11 changes: 11 additions & 0 deletions WDL/swell/swell-wnd-generic.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3363,6 +3363,17 @@ static LRESULT WINAPI comboWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM
InvalidateRect(hwnd,NULL,FALSE);
}
return 0;
case WM_MOUSEWHEEL:
if (s)
{
s->selidx += (short)HIWORD(wParam) < 0 ? 1:-1;
s->selidx = wdl_max(0,wdl_min(s->items.GetSize()-1,s->selidx));
char *ptr=s->items.Get(s->selidx)->desc;
SetWindowText(hwnd,ptr);
InvalidateRect(hwnd,NULL,FALSE);
SendMessage(GetParent(hwnd),WM_COMMAND,(GetWindowLong(hwnd,GWL_ID)&0xffff) | (CBN_SELCHANGE<<16),(LPARAM)hwnd);
}
return 0;
case WM_KEYDOWN:
if ((lParam&FVIRTKEY) && wParam == VK_DOWN) { s_capmode_state=5; goto popupMenu; }
if ((hwnd->m_style & CBS_DROPDOWNLIST) != CBS_DROPDOWNLIST &&
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