Add files

README.md

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+# [RunCat](https://github.com/Kyome22/RunCat_for_windows) Clone
+
+Program that displays an animation of a running cat on the taskbar
+
+## Preview
+
+CPU 0%
+
+![Preview 1%](preview-0.gif)
+
+CPU 100%
+
+![Preview 100%](preview-100.gif)
+
+## Usage
+
+1. Download and unzip [RunCat Clone](https://github.com/yehwankim23/runcat-clone/releases/latest/download/runcat-clone.zip)
+2. (Optional) Create a shortcut for `RunCat Clone.exe` and move it to the `Startup Folder` to run `RunCat Clone` on computer startup
+3. Run `RunCat Clone.exe`
+4. (Optional) Move the tray icon to the taskbar so that it is always displayed

runcat-clone.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34330.188
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "runcat-clone", "runcat-clone\runcat-clone.vcxproj", "{384F9E85-D3E1-47D2-A476-8BECD9081796}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Debug|x64.ActiveCfg = Debug|x64
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Debug|x64.Build.0 = Debug|x64
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Debug|x86.ActiveCfg = Debug|Win32
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Debug|x86.Build.0 = Debug|Win32
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Release|x64.ActiveCfg = Release|x64
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Release|x64.Build.0 = Release|x64
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Release|x86.ActiveCfg = Release|Win32
+		{384F9E85-D3E1-47D2-A476-8BECD9081796}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {8B874E24-8820-4BA9-90D7-DABBF6704BC2}
+	EndGlobalSection
+EndGlobal

runcat-clone/RunCatClone.cpp

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+#ifndef UNICODE
+#define UNICODE
+#endif
+
+#include <Windows.h>
+#include <strsafe.h>
+#include <sstream>
+#include <iomanip>
+
+#include "resource.h"
+
+const wchar_t szClass[] = L"RunCatCloneClass";
+const wchar_t szTitle[] = L"RunCat Clone";
+
+const UINT WM_APP_ANIMATE = WM_APP + 1;
+
+HINSTANCE hInst;
+NOTIFYICONDATA nid;
+
+DWORD dwMilliseconds = 100;
+std::wstringstream wss;
+
+UINT64 previousIdleTime = 0;
+UINT64 previousUsedTime = 0;
+double previousPercent = 0;
+
+LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
+
+int WINAPI wWinMain(
+    _In_ HINSTANCE hInstance,
+    _In_opt_ HINSTANCE hPrevInstance,
+    _In_ LPWSTR lpCmdLine,
+    _In_ int nShowCmd
+)
+{
+    HANDLE hMutex = CreateMutex(NULL, FALSE, L"RunCatCloneMutex");
+
+    if (!hMutex || GetLastError() == ERROR_ALREADY_EXISTS)
+    {
+        MessageBox(NULL, L"RunCat Clone is already running.", szTitle, MB_ICONWARNING);
+        return 1;
+    }
+
+    hInst = hInstance;
+
+    WNDCLASS wc{};
+    wc.style = CS_HREDRAW | CS_VREDRAW;
+    wc.lpfnWndProc = WndProc;
+    wc.cbClsExtra = 0;
+    wc.cbWndExtra = 0;
+    wc.hInstance = hInst;
+    wc.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_APP));
+    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
+    wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
+    wc.lpszMenuName = NULL;
+    wc.lpszClassName = szClass;
+
+    if (!RegisterClass(&wc))
+    {
+        MessageBox(NULL, L"Call to RegisterClass failed.", szTitle, MB_ICONWARNING);
+        return 1;
+    }
+
+    HWND hwnd = CreateWindow(
+        szClass,
+        szTitle,
+        WS_OVERLAPPEDWINDOW,
+        CW_USEDEFAULT,
+        CW_USEDEFAULT,
+        CW_USEDEFAULT,
+        CW_USEDEFAULT,
+        NULL,
+        NULL,
+        hInst,
+        NULL
+    );
+
+    if (!hwnd)
+    {
+        MessageBox(NULL, L"Call to CreateWindow failed.", szTitle, MB_ICONWARNING);
+        return 1;
+    }
+
+    ShowWindow(hwnd, SW_HIDE);
+    MSG msg;
+
+    while (GetMessage(&msg, NULL, 0, 0))
+    {
+        TranslateMessage(&msg);
+        DispatchMessage(&msg);
+    }
+
+    ReleaseMutex(hMutex);
+    return 0;
+}
+
+LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+    switch (message)
+    {
+        case WM_CREATE:
+        {
+            nid.cbSize = sizeof(NOTIFYICONDATA);
+            nid.hWnd = hwnd;
+            nid.uFlags = NIF_ICON | NIF_TIP | NIF_SHOWTIP;
+            nid.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_APP));
+            StringCchCopy(nid.szTip, ARRAYSIZE(nid.szTip), szTitle);
+            Shell_NotifyIcon(NIM_ADD, &nid);
+
+            nid.uVersion = NOTIFYICON_VERSION_4;
+            Shell_NotifyIcon(NIM_SETVERSION, &nid);
+
+            PostMessage(hwnd, WM_APP_ANIMATE, 0, 0);
+            return 0;
+        }
+        case WM_APP_ANIMATE:
+        {
+            nid.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_WHITE_CAT_0));
+            Shell_NotifyIcon(NIM_MODIFY, &nid);
+            Sleep(dwMilliseconds);
+
+            nid.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_WHITE_CAT_1));
+            Shell_NotifyIcon(NIM_MODIFY, &nid);
+            Sleep(dwMilliseconds);
+
+            nid.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_WHITE_CAT_2));
+            Shell_NotifyIcon(NIM_MODIFY, &nid);
+            Sleep(dwMilliseconds);
+
+            nid.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_WHITE_CAT_3));
+            Shell_NotifyIcon(NIM_MODIFY, &nid);
+            Sleep(dwMilliseconds);
+
+            nid.hIcon = LoadIcon(hInst, MAKEINTRESOURCE(IDI_WHITE_CAT_4));
+            Shell_NotifyIcon(NIM_MODIFY, &nid);
+            Sleep(dwMilliseconds);
+
+            FILETIME idleTime, kernelTime, userTime;
+            double currentPercent = previousPercent;
+
+            if (GetSystemTimes(&idleTime, &kernelTime, &userTime))
+            {
+                UINT64 currentIdleTime
+                    = (UINT64) idleTime.dwHighDateTime << 32 | (UINT64) idleTime.dwLowDateTime;
+                UINT64 currentUsedTime
+                    = ((UINT64) kernelTime.dwHighDateTime << 32 | (UINT64) kernelTime.dwLowDateTime)
+                    + ((UINT64) userTime.dwHighDateTime << 32 | (UINT64) userTime.dwLowDateTime);
+
+                UINT64 idleTimeChange = currentIdleTime - previousIdleTime;
+                UINT64 usedTimeChange = currentUsedTime - previousUsedTime;
+
+                currentPercent = (usedTimeChange - idleTimeChange) * 100.0 / usedTimeChange;
+
+                previousIdleTime = currentIdleTime;
+                previousUsedTime = currentUsedTime;
+            }
+
+            previousPercent = (previousPercent + currentPercent) / 2;
+            dwMilliseconds = static_cast<DWORD>(2000 / (previousPercent + 20));
+
+            wss << std::fixed << std::setprecision(1) << currentPercent;
+            std::wstring wPercent(wss.str());
+            wss.str(L"");
+            wss.clear();
+            StringCchCopy(nid.szTip, ARRAYSIZE(nid.szTip), (wPercent + L"%").c_str());
+
+            PostMessage(hwnd, WM_APP_ANIMATE, 0, 0);
+            return 0;
+        }
+        case WM_DESTROY:
+        {
+            Shell_NotifyIcon(NIM_DELETE, &nid);
+            PostQuitMessage(0);
+            return 0;
+        }
+        default:
+        {
+            return DefWindowProc(hwnd, message, wParam, lParam);
+        }
+    }
+}

runcat-clone/RunCatClone.rc

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+// Microsoft Visual C++ generated resource script.
+//
+#include "resource.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 2 resource.
+//
+#include "winres.h"
+
+/////////////////////////////////////////////////////////////////////////////
+#undef APSTUDIO_READONLY_SYMBOLS
+
+/////////////////////////////////////////////////////////////////////////////
+// Korean (Korea) resources
+
+#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_KOR)
+LANGUAGE LANG_KOREAN, SUBLANG_DEFAULT
+#pragma code_page(949)
+
+#ifdef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// TEXTINCLUDE
+//
+
+1 TEXTINCLUDE 
+BEGIN
+    "resource.h\0"
+END
+
+2 TEXTINCLUDE 
+BEGIN
+    "#include ""winres.h""\r\n"
+    "\0"
+END
+
+3 TEXTINCLUDE 
+BEGIN
+    "\r\n"
+    "\0"
+END
+
+#endif    // APSTUDIO_INVOKED
+
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Icon
+//
+
+// Icon with lowest ID value placed first to ensure application icon
+// remains consistent on all systems.
+IDI_APP                 ICON                    "resources\\app.ico"
+
+IDI_WHITE_CAT_0         ICON                    "resources\\white_cat_0.ico"
+
+IDI_WHITE_CAT_1         ICON                    "resources\\white_cat_1.ico"
+
+IDI_WHITE_CAT_2         ICON                    "resources\\white_cat_2.ico"
+
+IDI_WHITE_CAT_3         ICON                    "resources\\white_cat_3.ico"
+
+IDI_WHITE_CAT_4         ICON                    "resources\\white_cat_4.ico"
+
+#endif    // Korean (Korea) resources
+/////////////////////////////////////////////////////////////////////////////
+
+
+
+#ifndef APSTUDIO_INVOKED
+/////////////////////////////////////////////////////////////////////////////
+//
+// Generated from the TEXTINCLUDE 3 resource.
+//
+
+
+/////////////////////////////////////////////////////////////////////////////
+#endif    // not APSTUDIO_INVOKED
+

runcat-clone/resource.h

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+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by RunCatClone.rc
+//
+#define IDI_APP                         101
+#define IDI_WHITE_CAT_0                 102
+#define IDI_WHITE_CAT_1                 103
+#define IDI_WHITE_CAT_2                 104
+#define IDI_WHITE_CAT_3                 105
+#define IDI_WHITE_CAT_4                 106
+
+// Next default values for new objects
+// 
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        107
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1001
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif