#include "ScreenSave.h"

TPassward pwd;  //密碼緩沖區對象(TPassward.h)
const char* const PASSWARD = "kkcocoon";  //密碼設置
const char* const WRMSG = "呵呵,Wrong Passward,Input Again!!";

static const int scrwth=GetSystemMetrics(SM_CXFULLSCREEN)-100;   //窗口寬度
static const int scrhgt=GetSystemMetrics(SM_CYFULLSCREEN);   //窗口高度

//窗口消息處理函數,程序自動調用
LRESULT CALLBACK MainWndProc(HWND hWnd,UINT message,
                            WPARAM wParam, LPARAM lParam)
{
   HDC hdc; 

   switch (message)
   {       
   case WM_KEYUP:  //如果按下任一建 
        {
			if (wParam == VK_RETURN) {  //回車鍵
				if (pwd == PASSWARD){
					PostQuitMessage(0); //發出關閉程序的消息
				}

				else {     //輸出錯誤密碼消息
					pwd.clear();
					hdc = GetDC(hWnd);
					SetTextColor( hdc, RGB(255,255,0) );
                    SetBkMode(hdc, TRANSPARENT );                   
			        TextOut(  //Windows系統接口函數(Windows API)
						hdc,                    //窗口的設備環境
						scrwth*rand()/RAND_MAX, //起始的x坐標
						scrhgt*rand()/RAND_MAX, //起始的y坐標
						WRMSG,                  //輸出的字符串  
						strlen(WRMSG)           //字符串長度
						);
					ReleaseDC(hWnd,hdc);					
				}
			}
				
	//	   if (wParam == VK_ESCAPE)  //ESC鍵
    //        PostQuitMessage(0); //發出關閉程序的消息
           break;
        }

   case WM_CHAR:
	   {
		   if (wParam<'z' && wParam>'a')
			   pwd = pwd + (char)wParam;  //輸入字符存入密碼緩沖區(TPassward.h)
		   break;
	   }
   case WM_CLOSE:
	   {
		   break; 
	   }

   case WM_DESTROY:            //如果按下關閉按鈕
        {
           PostQuitMessage(0); //發出關閉程序的消息
           break;
        }
   default:  //其他消息發給windows默認窗口處理函數
            return (DefWindowProc(hWnd,message,wParam,lParam));
   }
   return 0;
}