Add NightShot source

include/capture.hpp

@@ -0,0 +1,27 @@
+#pragma once
+#include "config.hpp"
+#include <windows.h>
+
+struct ScreenCapture {
+    HDC memoryDc = nullptr;
+    HBITMAP bitmap = nullptr;
+    HGDIOBJ oldBitmap = nullptr;
+    void* pixels = nullptr;
+    int x = 0;
+    int y = 0;
+    int width = 0;
+    int height = 0;
+    int stride = 0;
+
+    ScreenCapture() = default;
+    ScreenCapture(const ScreenCapture&) = delete;
+    ScreenCapture& operator=(const ScreenCapture&) = delete;
+    ScreenCapture(ScreenCapture&& other) noexcept;
+    ScreenCapture& operator=(ScreenCapture&& other) noexcept;
+    ~ScreenCapture();
+
+    [[nodiscard]] bool valid() const noexcept { return memoryDc && bitmap && width > 0 && height > 0; }
+    void reset() noexcept;
+};
+
+[[nodiscard]] ScreenCapture captureVirtualDesktop();