TAL Education Technology
Aug 4, 2022 · Fundamentals
Comparing GDI and DXGI Screenshot Methods in Qt with Performance Analysis
This article introduces GDI and DXGI screen capture techniques, provides Qt implementations with detailed code examples, compares their performance and visual results, and presents a CPU/GPU usage benchmark, concluding that DXGI offers higher GPU efficiency while both methods have specific trade‑offs.
C++DXGIGDI
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