Display Power Off Utility Code

#include "stdafx.h"

#include "Platform.h"

void Platform::InitCommonControls()
{
	EXECUTE_ONCE()

	constexpr auto initCommonControlsEx = INITCOMMONCONTROLSEX
	{
		sizeof INITCOMMONCONTROLSEX,
		ICC_STANDARD_CLASSES | ICC_BAR_CLASSES | ICC_LINK_CLASS
	};

	VERIFY(InitCommonControlsEx(&initCommonControlsEx));
}

HICON Platform::LoadIconBest(HINSTANCE hInstance, int nIconId, bool smallIcon)
{
	HICON hIcon = nullptr;

	VERIFY_SUCCEEDED(LoadIconMetric(hInstance, MAKEINTRESOURCE(nIconId), smallIcon ? LIM_SMALL : LIM_LARGE, &hIcon));

	return hIcon;
}

HICON Platform::LoadIconSize(HINSTANCE hInstance, int nIconId, bool smallIcon)
{
	const auto hIcon = LoadImage(hInstance, MAKEINTRESOURCE(nIconId),
		IMAGE_ICON,
		GetSystemMetrics(smallIcon ? SM_CXSMICON : SM_CXICON),
		GetSystemMetrics(smallIcon ? SM_CYSMICON : SM_CYICON),
		LR_SHARED);

	ASSERT(hIcon && "LoadImage");

	return static_cast<HICON>(hIcon);
}

void Platform::CenterWindow(HWND hwnd)
{
	ASSERT(hwnd);

	auto hwndOwner = GetParent(hwnd);

	if (!hwndOwner || !IsWindowVisible(hwndOwner) || IsIconic(hwndOwner))
	{
		hwndOwner = GetDesktopWindow();
	}

	ASSERT(hwndOwner);

	RECT ownerRect, hwndRect, rect;

	VERIFY(GetWindowRect(hwndOwner, &ownerRect));
	VERIFY(GetWindowRect(hwnd, &hwndRect));

	VERIFY(CopyRect(&rect, &ownerRect));

	VERIFY(OffsetRect(&hwndRect, -hwndRect.left,  -hwndRect.top));
	VERIFY(OffsetRect(&rect,	 -rect.left,	  -rect.top));
	VERIFY(OffsetRect(&rect,	 -hwndRect.right, -hwndRect.bottom));

	VERIFY(SetWindowPos(hwnd, nullptr, ownerRect.left + rect.right / 2, ownerRect.top + rect.bottom / 2, 0, 0, SWP_NOSIZE | SWP_NOZORDER));
}

void Platform::CloseWindow(HWND hwnd)
{
	VERIFY(PostMessage(hwnd, WM_CLOSE, 0, 0));
}

void Platform::SetIcon(HWND hwnd, HINSTANCE hInstance, int nIconId)
{
#pragma warning(push)
#pragma warning(disable: 26490)
	SendMessage(hwnd, WM_SETICON, ICON_SMALL, reinterpret_cast<LPARAM>(LoadIconSize(hInstance, nIconId, true)));
	SendMessage(hwnd, WM_SETICON, ICON_BIG,   reinterpret_cast<LPARAM>(LoadIconSize(hInstance, nIconId, false)));
#pragma warning(pop)
}

BOOL Platform::MoveMenuItem(HMENU hMenu, UINT uPosFrom, UINT uPosInsertAfter)
{
	CharBuffer<256> szMenuText;

	if (GetMenuString(hMenu, uPosFrom, szMenuText, szMenuText, MF_BYPOSITION) &&
		InsertMenu(hMenu, uPosInsertAfter, MF_BYPOSITION, GetMenuItemID(hMenu, uPosFrom), szMenuText))
	{
		if (uPosFrom > uPosInsertAfter)
		{
			++uPosFrom;
		}

		return DeleteMenu(hMenu, uPosFrom, MF_BYPOSITION);
	}

	return FALSE;
}

BOOL Platform::SetMenuItemText(HMENU hMenu, UINT uId, LPTSTR szText)
{
#pragma warning(suppress: 26486)
	DECLARE_CBSTRUCT(MENUITEMINFO, menuItemInfo);

	menuItemInfo.dwTypeData = szText;
	menuItemInfo.fMask = MIIM_STRING;

	return SetMenuItemInfo(hMenu, uId, FALSE, &menuItemInfo);
}