SingleInstance

A Qt 6 / QML application that ensures only a single instance of the app runs at a time.

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✨ Features

• Prevents multiple instances from running simultaneously.
• Lightweight and cross-platform (Windows, Linux, macOS).
• Smooth UI with effects and theming support.

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🛠 Tech Stack

• Language: C++
• UI: Qt Quick / QML
• Framework: Qt 6
• Build System: CMake
• Platform: Windows (primary), Linux, macOS
• Extras: Single-instance protection via QSharedMemory + QSystemSemaphore.

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📦 Requirements

• Qt 6.x

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📸 Screenshots

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🤝 Contributing

Contributions are welcome. Please open an issue or submit a pull request.

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📬 Contact

Created by Saif GitHub: https://github.com/Saif-k93

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🔧 Build Instructions

Clone the repository and build using CMake:

git clone https://github.com/Saif-k93/SingleInstance.git
cd SingleInstance
cmake -S . -B build
cmake --build build
For Windows (MSVC):

bash
Copy code
cmake -S . -B build -G "Visual Studio 17 2022"
cmake --build build --config Release

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▶️ Run
Run the generated executable from the build directory.
The app will prevent opening multiple instances and show a message if another instance is already running.