Method ComboBoxSubclassProc

src/Utils/Theme.cpp:464–532

}

LRESULT CTheme::ComboBoxSubclassProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR /*uIdSubclass*/, DWORD_PTR dwRefData)
{
	switch (uMsg)
	{
	case WM_CTLCOLORDLG:
	case WM_CTLCOLORSTATIC:
	case WM_CTLCOLOREDIT:
	case WM_CTLCOLORLISTBOX:
	case WM_CTLCOLORBTN:
	case WM_CTLCOLORSCROLLBAR:
		{
			auto hbrBkgnd = reinterpret_cast<HBRUSH*>(dwRefData);
			HDC hdc = reinterpret_cast<HDC>(wParam);
			SetTextColor(hdc, darkTextColor);
			SetBkColor(hdc, darkBkColor);
			if (!*hbrBkgnd)
				*hbrBkgnd = CreateSolidBrush(darkBkColor);
			return reinterpret_cast<LRESULT>(*hbrBkgnd);
		}
	case WM_DRAWITEM:
		{
			auto pDIS = reinterpret_cast<LPDRAWITEMSTRUCT>(lParam);
			HDC hDC = pDIS->hDC;
			RECT rc = pDIS->rcItem;
			wchar_t itemText[1024] = { 0 };

			COMBOBOXEXITEM cbi = { 0 };
			cbi.mask = CBEIF_TEXT | CBEIF_IMAGE | CBEIF_SELECTEDIMAGE | CBEIF_OVERLAY | CBEIF_INDENT;
			cbi.iItem = pDIS->itemID;
			cbi.cchTextMax = _countof(itemText);
			cbi.pszText = itemText;

			auto cwnd = GetParent(hWnd);
			if (SendMessage(cwnd, CBEM_GETITEM, 0, reinterpret_cast<LPARAM>(&cbi)))
			{
				rc.left += (cbi.iIndent * 10);
				auto img = (pDIS->itemState & LVIS_SELECTED) ? cbi.iSelectedImage : cbi.iImage;
				if (pDIS->itemState & LVIS_FOCUSED)
					::SetBkColor(hDC, darkDisabledTextColor);
				else
					::SetBkColor(hDC, darkBkColor);
				::ExtTextOut(hDC, 0, 0, ETO_OPAQUE, &rc, nullptr, 0, nullptr);

				if (img)
				{
					auto imglist = reinterpret_cast<HIMAGELIST>(SendMessage(cwnd, CBEM_GETIMAGELIST, 0, 0));
					if (imglist)
					{
						int iconX(0), iconY(0);
						ImageList_GetIconSize(imglist, &iconX, &iconY);
						ImageList_Draw(imglist, img, hDC, rc.left, rc.top, ILD_TRANSPARENT | INDEXTOOVERLAYMASK(cbi.iOverlay));
						rc.left += (iconX + 2);
					}
				}

				SetTextColor(pDIS->hDC, darkTextColor);
				SetBkMode(hDC, TRANSPARENT);
				DrawText(hDC, cbi.pszText, -1, &rc, DT_SINGLELINE | DT_VCENTER | DT_NOPREFIX | DT_END_ELLIPSIS);