Mine

#include <windows.h>
#include "resource.h"

HMODULE hThisModule;
char buffer[4];

int GetPixel()
{
	HWND hwnd = FindWindow(0, "MapleStory");
	HDC hdc = GetDC(hwnd);
	COLORREF checkPin = GetPixel(hdc,288,236);

	return GetRValue(checkPin);
}

void doMagic(int from, int to)
{
	Sleep(6500);
	while(from <= to)
	{
		if (GetPixel() == 93)
		{
			//SendMessage
		}
	}
}

BOOL CALLBACK WndProc(HWND hWnd, UINT uMessage, WPARAM wParam, LPARAM lParam)
{
	switch (uMessage)
	{
	case WM_COMMAND:
		switch( wParam )
		{
			case IDC_BUTTON1:
				GetWindowText(GetDlgItem(hWnd, IDC_EDIT3), buffer, sizeof(buffer));
				int from = atoi(buffer);

				GetWindowText(GetDlgItem(hWnd, IDC_EDIT4), buffer, sizeof(buffer));
				int to = atoi(buffer);
				doMagic(from, to);
			return TRUE;
		}
		break;
	case WM_CLOSE:
		EndDialog(hWnd, 0);
		return TRUE;
	}
	return FALSE;
}

DWORD WINAPI ShowDialog(LPVOID lpParam)
{
	return (DWORD)(DWORD_PTR)DialogBox((HMODULE)lpParam,MAKEINTRESOURCE(IDD_DIALOG1), 0, WndProc);
}

BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
{
	hThisModule = hModule;
	DisableThreadLibraryCalls(hModule);
	switch( ul_reason_for_call )
	{
	case DLL_PROCESS_ATTACH:
		CreateThread(0, 0, &ShowDialog, (LPVOID)hModule, 0, 0);
		break;
	case DLL_PROCESS_DETACH:
		break;
	}
	return TRUE;
}