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

PNOTIFYICONDATA Icon;  //右下角图标的一个结构体指针
#define ID_SHOW 0x5000

void move_Middle(HWND hWnd)
{
	RECT rect;
	int x,y;
	GetWindowRect(hWnd, &rect);//得到当前窗口大小信息
	x = rect.right - rect.left;
	y = rect.bottom - rect.top;
	MoveWindow(hWnd, (GetSystemMetrics(SM_CXSCREEN)- x)>>1, (GetSystemMetrics(SM_CYSCREEN)-y)>>1, x, y , TRUE);
}

INT_PTR CALLBACK ProcWinMain(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	static HMENU hmenu;
	static HINSTANCE hInst;
	hInst=(HINSTANCE)GetWindowLong(hWnd,GWL_HINSTANCE);

	hmenu=LoadMenu(hInst,"MYPOPUPMENU");
	hmenu=GetSubMenu(hmenu,0);
	HWND hwndfrontwin;


	int iFileNum = 0 ;
	char FileName[MAX_PATH];
	int i;
	switch(Msg)
	{
		case WM_INITDIALOG:
			RegisterHotKey(hWnd, ID_SHOW, NULL, VK_F2);
			move_Middle(hWnd);
			break;

		case WM_USER+0x100://右下角图标事件
			switch(lParam)
			{
			case WM_LBUTTONDBLCLK: //双击,显示隐藏窗体
				ShowWindow((HWND)wParam, SW_SHOW);
				Icon->uID = wParam;
				Shell_NotifyIcon(NIM_DELETE,Icon);
				break;
			}
			break;

		case WM_HOTKEY://处理热键消息
			switch(wParam)
			{
				case ID_SHOW:

					hwndfrontwin = GetForegroundWindow();
					if (hwndfrontwin == hWnd)
					{
						Icon->hIcon = LoadIcon(hInst, (LPCSTR)IDI_ICON1);
					}
			                else
			                {
				                if (!SendMessageTimeout(hwndfrontwin, WM_GETICON, 0, 0, 
				                    SMTO_BLOCK | SMTO_ABORTIFHUNG, 15000, (PULONG_PTR) &Icon->hIcon)
				                    || NULL == Icon->hIcon)
				                	Icon->hIcon = (HICON)(PLONG)GetClassLongPtr(hwndfrontwin, GCLP_HICONSM);
			                }
					Icon->uID = (UINT)hwndfrontwin;
					GetWindowText(hwndfrontwin, Icon->szTip, 64);
					Shell_NotifyIcon(NIM_ADD,Icon);
					ShowWindow(hwndfrontwin, FALSE);

					break;
			}
			break;

		case WM_SHOWWINDOW:
			Icon->hWnd = hWnd;
			move_Middle(hWnd);
			break;

		case WM_COMMAND:
			//用户自定义消息
			switch(wParam) 
			{
				case IDOK:
				case IDCANCEL:
					PostMessage(hWnd, WM_CLOSE, NULL, NULL);
					break;
			}	
			break;

		case WM_CLOSE:
			// 这里要把之前所有隐藏的窗口显示出来
			UnregisterHotKey(hWnd, ID_SHOW);
			EndDialog(hWnd, 0);
			break;

		default:
			return FALSE;
			break;
	}
	return 0;
} 

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	Icon = new NOTIFYICONDATA;
	ZeroMemory(Icon,sizeof(Icon));
	Icon->cbSize = sizeof(Icon);
	Icon->uFlags = NIF_ICON|NIF_MESSAGE|NIF_TIP;
	Icon->uCallbackMessage = WM_USER+0x100 ;

	//显示窗口
	DialogBoxParam(hInstance,(LPCSTR)IDD_DIALOG1 ,NULL, (DLGPROC)ProcWinMain, NULL);
	return TRUE;
}