win系統小優化者

如圖所示

全部代碼【就個外表，沒實現功能】 

#include <windows.h>
#include <windowsx.h>
#include <process.h>
#include <TlHelp32.h>
#include "resource.h"
#pragma comment(lib,"msimg32.lib")
#pragma warning(disable:4293)

#define DefaultWindowBitmapPath "C:\\Users\\Administrator\\Desktop\\123.bmp"
#define DefaultForbidColor RGB(255,255,255)

//全局變量
HINSTANCE g_Hinstance = NULL;
HBITMAP g_Bitmap=NULL;
HWND g_Window = NULL;
HANDLE g_DrawThread = NULL;
unsigned int g_DrawThreadID = NULL;

//負責收尾的函數
void ClearWorker()
{
	::TerminateThread(g_DrawThread, NULL);
	::DeleteObject(g_Bitmap);
	::DeleteObject(g_Window);
	::CloseHandle(g_DrawThread);
}

//獲取當前進程數量
int GetCurrentProcessNum()
{
	int nCureentProcessNum = 0;
	HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, NULL);
	if (hSnap == NULL)
		return nCureentProcessNum;

	PROCESSENTRY32 ProcessInfo = {0};
	ProcessInfo.dwSize = sizeof(PROCESSENTRY32);
	BOOL bOk = Process32First(hSnap, &ProcessInfo);
	while (bOk)
	{
		nCureentProcessNum++;
		bOk = Process32Next(hSnap,&ProcessInfo);
	}
	CloseHandle(hSnap);
	return nCureentProcessNum;
}



//CPU使用率輔助函數
int DiffentTime(FILETIME time1, FILETIME time2)
{
	int a = time1.dwHighDateTime << 32 | time1.dwLowDateTime;
	int b = time2.dwHighDateTime << 32 | time2.dwLowDateTime;
	return(b - a);
}

//獲取CPU當前使用率
int GetCpuUse()
{
	FILETIME idleTime1 = { 0 }, idleTime2 = {0};
	FILETIME kernelTime1 = {0}, kernelTime2 = { 0 };
	FILETIME userTime1 = {0}, userTime2 = { 0 };

	::GetSystemTimes(&idleTime1, &kernelTime1, &userTime1);
	Sleep(1000);
	::GetSystemTimes(&idleTime2, &kernelTime2, &userTime2);
	int idle = (int)DiffentTime(idleTime1, idleTime2);
	int kermel = (int)DiffentTime(kernelTime1, kernelTime2);
	int user = (int)DiffentTime(userTime1, userTime2);
	if (kermel + user == NULL)
		return 0;
	else
		return abs((kermel + user - idle) * 100 / (kermel + user));

}

//顯示當前內存情況
void ShowMemoryState(HDC& dc)
{
	MEMORYSTATUSEX sysMemory = { 0 };
	sysMemory.dwLength = sizeof(MEMORYSTATUSEX);
	if (!GlobalMemoryStatusEx(&sysMemory))return;

	HPEN hPen = ::CreatePen(PS_SOLID, 6, RGB(0, 255, 0));
	if (hPen == NULL)return;

	(HPEN)SelectObject(dc, hPen);
	int PageSize = 1024;
	char szBuf[100] = { 0 };

	wsprintfA(szBuf, "叫我小優化者");
	TextOutA(dc, 100, 0, szBuf, strlen(szBuf));

	wsprintfA(szBuf, "內存使用:%d%%", sysMemory.dwMemoryLoad );
	TextOutA(dc, 100, 20, szBuf, strlen(szBuf));

	wsprintfA(szBuf, "可用內存:%dGB", sysMemory.ullAvailPhys/PageSize/PageSize/PageSize);
	TextOutA(dc,100,40,szBuf,strlen(szBuf));

	wsprintfA(szBuf, "CPU使用:%d%", GetCpuUse());
	TextOutA(dc, 100, 60, szBuf, strlen(szBuf));

	wsprintfA(szBuf, "當前進程:%d個", GetCurrentProcessNum());
	TextOutA(dc, 100, 80, szBuf, strlen(szBuf));

	::DeletePen(hPen);
}

unsigned int _stdcall WindowDrawThread(PVOID)
{
	while (TRUE)
	{
		HDC hdc = ::GetWindowDC(g_Window);
		if (hdc == NULL)return 0;

		RECT Rect = { 0 };
		if (!::GetWindowRect(g_Window, &Rect))return 0;

		HDC dcMem = ::CreateCompatibleDC(hdc);
		if (dcMem == NULL)return 0;
		::SelectObject(dcMem, g_Bitmap);

		ShowMemoryState(dcMem);

		::BitBlt(hdc, 0, 0, Rect.right - Rect.left, Rect.bottom - Rect.top,
			dcMem, NULL, NULL, SRCCOPY);

		::DeleteDC(dcMem);
		::DeleteDC(hdc);
	}
	return 0;
}

LRESULT CALLBACK WinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC hdc=NULL;
	PAINTSTRUCT ps = { 0 };

	switch (message)
	{
	case WM_CREATE:
		::SetLayeredWindowAttributes(hWnd, DefaultForbidColor, NULL, LWA_COLORKEY);
		g_DrawThread = (HANDLE)::_beginthreadex(NULL, NULL, WindowDrawThread, NULL, NULL, &g_DrawThreadID);
		break;
	case WM_COMMAND:
		switch (LOWORD(wParam))
		{
		case ID_KillMemory:
			break;
		case ID_KillProcess:
			break;
		case ID_KillNullFile:
			break;
		case ID_Exit:
			::PostMessage(hWnd, WM_CLOSE, 0, 0);
			break;
		}
		break;
	case WM_CONTEXTMENU:
	{
		HMENU hMenu = LoadMenuA(g_Hinstance, MAKEINTRESOURCE(IDR_MENU1));
		if (hMenu)
		{
			HMENU hPop = GetSubMenu(hMenu, 0);
			int PX = GET_X_LPARAM(lParam);
			int PY = GET_Y_LPARAM(lParam);
			TrackPopupMenu(hPop, TPM_LEFTALIGN | TPM_TOPALIGN | TPM_RIGHTALIGN,
				PX, PY, NULL, (HWND)wParam,NULL);
			DestroyMenu(hMenu);
			DestroyMenu(hPop);
		}
	}
		break;
	case WM_PAINT:
		hdc = ::BeginPaint(hWnd, &ps);
		::EndPaint(hWnd, &ps);
		break;
	case WM_LBUTTONDOWN:
		::PostMessage(hWnd, WM_SYSCOMMAND, SC_MOVE | HTCAPTION, NULL);
		return TRUE;
	case WM_CLOSE:
		ClearWorker();
		::PostQuitMessage(0);
		break;
	default:
		return ::DefWindowProcA(hWnd,message,wParam,lParam);
	}
	return 0;
}

int APIENTRY WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE , _In_ LPSTR , _In_ int nShowCmd)
{
	LPCSTR pszWinCls = "PrcessKiller";
	g_Hinstance = hInstance;

	WNDCLASSEX wnd = { 0 };
	wnd.cbSize = sizeof(WNDCLASSEX);
	wnd.hbrBackground = (HBRUSH)::GetStockObject(NULL_BRUSH);
	wnd.hInstance = hInstance;
	wnd.hCursor = ::LoadCursor(NULL, IDC_ARROW);
	wnd.lpfnWndProc = WinProc;
	wnd.lpszClassName = pszWinCls;
	wnd.style = CS_HREDRAW | CS_VREDRAW;
	if (::RegisterClassExA(&wnd) == NULL)return -1;

	g_Bitmap = (HBITMAP)::LoadImageA(NULL, DefaultWindowBitmapPath, IMAGE_BITMAP,
		NULL, NULL, LR_LOADFROMFILE | LR_DEFAULTSIZE);
	if (g_Bitmap == NULL)return -1;

	BITMAP BitmapInfo = { 0 };
	::GetObject(g_Bitmap,sizeof(BITMAP),&BitmapInfo);

	g_Window = ::CreateWindowExA(WS_EX_TOPMOST|WS_EX_LAYERED,pszWinCls,pszWinCls,WS_POPUP,
		300,300,BitmapInfo.bmWidth,BitmapInfo.bmHeight,NULL,NULL,hInstance,NULL);
	if (g_Window == NULL)return -1;

	::ShowWindow(g_Window, nShowCmd);
	::UpdateWindow(g_Window);

	MSG msg = { 0 };
	while (::GetMessage(&msg, NULL, NULL, NULL))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return msg.wParam;
}