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#if defined(Hiro_VerticalScrollBar)
namespace hiro {
auto pVerticalScrollBar::construct() -> void {
hwnd = CreateWindow(
L"SCROLLBAR", L"", WS_CHILD | SBS_VERT,
0, 0, 0, 0, _parentHandle(), nullptr, GetModuleHandle(0), 0
);
pWidget::construct();
setLength(state().length);
setPosition(state().position);
}
auto pVerticalScrollBar::destruct() -> void {
DestroyWindow(hwnd);
}
auto pVerticalScrollBar::minimumSize() const -> Size {
return {18_sx, 0};
}
auto pVerticalScrollBar::setLength(u32 length) -> void {
length += (length == 0);
SetScrollRange(hwnd, SB_CTL, 0, length - 1, TRUE);
}
auto pVerticalScrollBar::setPosition(u32 position) -> void {
SetScrollPos(hwnd, SB_CTL, position, TRUE);
}
auto pVerticalScrollBar::onChange(WPARAM wparam) -> void {
u32 position = ScrollEvent(hwnd, wparam);
if(position == state().position) return;
state().position = position;
self().doChange();
}
}
#endif
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