WinAPI System Monitor

A lightweight Windows system monitoring application built with the Win32 API. Displays real-time CPU, RAM, disk, network, and GPU usage in a dark-themed grid UI with colored progress bars.

Features

• CPU — per-core usage tracking via NtQuerySystemInformation
• Memory — system RAM load percentage via GlobalMemoryStatusEx
• Disk — both storage space used and I/O activity on C:\
• Network — real-time upload and download speed in KB/s
• NVIDIA GPU — usage, VRAM, temperature and clock speed via NVML (dynamic loading of nvml.dll)
• AMD GPU — usage percentage via PDH performance counters
• Alerts — pop-up warnings when CPU, RAM or disk exceed configurable thresholds (30s cooldown between alerts)

Building

Requirements

• Windows 10 or later
• Visual Studio 2022 with the Desktop development with C++ workload
• Windows SDK 10.0.22621.0 or later
• NVIDIA drivers installed (for GPU monitoring — nvml.dll must be present in C:\Windows\System32)

Steps

1. Clone the repository:

   git clone https://github.com/SoloScriptSage/winapi-system-monitor.git

2. Open winapi.vcxproj in Visual Studio
3. Set configuration to Debug x64 or Release x64
4. Build with Ctrl+Shift+B
5. Run with F5

Roadmap

• GPU temperature graph over time
• Per-core CPU usage bars
• Multiple disk support (C:, D:, etc.)
• Configurable alert thresholds via settings window
• Full AMD GPU support via ADL SDK (currently only usage % via PDH)
• System tray icon with quick stats on hover
• Export stats to CSV