/*
///////////////////////////////////////
	MouseShadowFix by vebero v1.0
///////////////////////////////////////
*/

#define WIN32_LEAN_AND_MEAN

#include <Windows.h>

#pragma comment(linker, "\"/manifestdependency:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

typedef __int32 int32;

typedef unsigned __int32 uint32;

#define MSGBOX_ERROR MB_ICONERROR | MB_OK

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	int32 nResult;

	HKEY hKey = nullptr;

	nResult = RegOpenKeyEx(HKEY_CURRENT_USER,
						   L"Control Panel\\Desktop",
						   0,
						   KEY_NOTIFY,
						   &hKey);

	if(nResult != ERROR_SUCCESS)
		MessageBox(nullptr, L"RegOpenKeyEx failed.", L"MouseShadowFix", MSGBOX_ERROR);

	HANDLE hEvent = CreateEvent(nullptr, false, false, nullptr);

	if(!hEvent)
		MessageBox(nullptr, L"CreateEvent failed.", L"MouseShadowFix", MSGBOX_ERROR);

	while(true)
	{
		uint32 unFilter = REG_NOTIFY_CHANGE_LAST_SET;

		nResult = RegNotifyChangeKeyValue(hKey,
										  false,
										  unFilter,
										  hEvent,
										  true);

		if(nResult != ERROR_SUCCESS)
			MessageBox(nullptr, L"RegNotifyChangeKeyValue failed.", L"MouseShadowFix", MSGBOX_ERROR);

		if(WaitForSingleObject(hEvent, INFINITE) == WAIT_OBJECT_0)
		{
			bool bShadowEnabled;

			BOOL bResult = SystemParametersInfo(SPI_GETCURSORSHADOW,
												0,
												&bShadowEnabled,
												0);

			if(!bResult)
				MessageBox(nullptr, L"SystemParametersInfo (GET) failed.", L"MouseShadowFix", MSGBOX_ERROR);

			if(!bShadowEnabled)
			{
				bool bCursorShadow = true;

				uint32 unChangeAction = SPIF_UPDATEINIFILE | SPIF_SENDCHANGE;

				BOOL bResult = SystemParametersInfo(SPI_SETCURSORSHADOW,
													0,
													&bCursorShadow,
													unChangeAction);

				if(!bResult)
					MessageBox(nullptr, L"SystemParametersInfo (SET) failed.", L"MouseShadowFix", MSGBOX_ERROR);
			}
		}
	}

	CloseHandle(hEvent);

	RegCloseKey(hKey);

	return 0;
}