{"id":2905,"date":"2026-06-15T19:06:55","date_gmt":"2026-06-15T11:06:55","guid":{"rendered":"https:\/\/cocozq.com\/?p=2905"},"modified":"2026-06-15T19:06:55","modified_gmt":"2026-06-15T11:06:55","slug":"%e6%88%aa%e5%9b%be%e5%b7%a5%e5%85%b7%e5%bc%80%e5%8f%91%e8%b8%a9%e5%9d%91%e8%ae%b0%ef%bc%9a%e7%aa%97%e5%8f%a3%e8%af%86%e5%88%ab%e3%80%81%e5%88%86%e5%b1%82%e7%aa%97%e5%8f%a3%e6%8d%95%e8%8e%b7%e4%b8%8e","status":"publish","type":"post","link":"https:\/\/cocozq.com\/?p=2905","title":{"rendered":"\u622a\u56fe\u5de5\u5177\u5f00\u53d1\u8e29\u5751\u8bb0\uff1a\u7a97\u53e3\u8bc6\u522b\u3001\u5206\u5c42\u7a97\u53e3\u6355\u83b7\u4e0e\u524d\u7aef\u6570\u636e\u540c\u6b65"},"content":{"rendered":"

\u622a\u56fe\u5de5\u5177\u5f00\u53d1\u8e29\u5751\u8bb0\uff1a\u7a97\u53e3\u8bc6\u522b\u3001\u5206\u5c42\u7a97\u53e3\u6355\u83b7\u4e0e\u524d\u7aef\u6570\u636e\u540c\u6b65<\/h1>\n

\n \u5f00\u53d1\u622a\u56fe\u5de5\u5177\u65f6\uff0c\u9047\u5230\u4e86\u4e00\u7cfb\u5217\u68d8\u624b\u7684\u95ee\u9898\uff1a\u6309 ESC \u53d6\u6d88\u622a\u56fe\u540e\u4e3b\u7a97\u53e3\u610f\u5916\u8df3\u5230\u524d\u53f0\u3001PowerToys \u7b49\u5e94\u7528\u7684\u5f39\u51fa\u5f0f\u4e0b\u62c9\u6846\u65e0\u6cd5\u88ab\u8bc6\u522b\u548c\u6355\u83b7\u3001\u622a\u56fe\u8986\u76d6\u5c42\u663e\u793a\u7684\u56fe\u7247\u4e0e\u5b9e\u9645\u622a\u53d6\u7684\u56fe\u7247\u4e0d\u4e00\u81f4\u3002\u8fd9\u4e9b\u95ee\u9898\u6d89\u53ca Windows \u7a97\u53e3\u7ba1\u7406\u3001GDI \u5c4f\u5e55\u6355\u83b7\u3001Tauri \u4e8b\u4ef6\u673a\u5236\u548c\u6d4f\u89c8\u5668\u56fe\u7247\u6e32\u67d3\u7b49\u591a\u4e2a\u5c42\u9762\u3002\u672c\u6587\u8bb0\u5f55\u4e86\u5b8c\u6574\u7684\u6392\u67e5\u548c\u4fee\u590d\u8fc7\u7a0b\uff0c\u5e0c\u671b\u80fd\u5e2e\u52a9\u9047\u5230\u7c7b\u4f3c\u95ee\u9898\u7684\u5f00\u53d1\u8005\u3002\n<\/p><\/blockquote>\n

\n

\u95ee\u9898\u4e00\uff1a\u6309 ESC \u53d6\u6d88\u622a\u56fe\u540e\u4e3b\u7a97\u53e3\u8df3\u5230\u524d\u53f0<\/h2>\n

\u73b0\u8c61<\/h3>\n

\u622a\u56fe\u65f6\u6309 ESC \u952e\u53d6\u6d88\uff0c\u7a0b\u5e8f\u7684\u4e3b\u754c\u9762\u7a97\u53e3\u4f1a\u610f\u5916\u5730\u8df3\u5230\u524d\u53f0\uff0c\u83b7\u5f97\u7126\u70b9\u3002<\/p>\n

\u539f\u56e0\u5206\u6790<\/h3>\n

\u5728\u53d6\u6d88\u622a\u56fe\u7684\u5904\u7406\u903b\u8f91\u4e2d\uff0c\u4ee3\u7801\u663e\u5f0f\u8c03\u7528\u4e86\u4e3b\u7a97\u53e3\u7684 show()<\/code> \u548c set_focus()<\/code> \u65b9\u6cd5\uff1a<\/p>\n

\/\/ cancel_capture \u51fd\u6570\u4e2d\nlet _ = main_window.show();\nlet _ = main_window.set_focus();\n<\/code><\/pre>\n
\u53d6\u6d88\u64cd\u4f5c\u7684\u672c\u610f\u662f\u6062\u590d\u4e3b\u7a97\u53e3\u72b6\u6001\uff0c\u4f46\u7528\u6237\u671f\u671b\u53d6\u6d88\u540e\u7a0b\u5e8f\u5e94\u8be5\u5b89\u9759\u5730\u56de\u5230\u6258\u76d8\uff0c\u800c\u4e0d\u662f\u62a2\u5360\u7126\u70b9\u3002<\/p>\n
\u4fee\u590d<\/h3>\n
\u79fb\u9664\u53d6\u6d88\u64cd\u4f5c\u4e2d\u5bf9\u4e3b\u7a97\u53e3\u7684\u663e\u793a\u548c\u805a\u7126\u8c03\u7528\uff0c\u53ea\u4fdd\u7559\u9500\u6bc1\u622a\u56fe\u8986\u76d6\u7a97\u53e3\u7684\u903b\u8f91\uff1a<\/p>\n
fn cancel_capture() {\n    \/\/ \u53ea\u9500\u6bc1\u622a\u56fe\u7a97\u53e3\uff0c\u4e0d\u4e3b\u52a8\u663e\u793a\/\u805a\u7126\u4e3b\u7a97\u53e3\n    if let Some(window) = app.get_webview_window(\"capture\") {\n        let _ = window.destroy();\n    }\n}\n<\/code><\/pre>\n
\u7ecf\u9a8c\u603b\u7ed3<\/h3>\n
    \n
  • \u684c\u9762\u5de5\u5177\u7c7b\u5e94\u7528\u5e94\u5c0a\u91cd\u7528\u6237\u7684\u7126\u70b9\u72b6\u6001\uff0c\u907f\u514d\u5728\u53d6\u6d88\u64cd\u4f5c\u4e2d\u62a2\u5360\u7126\u70b9<\/li>\n
  • \u6258\u76d8\u9a7b\u7559\u578b\u5e94\u7528\u5728\u53d6\u6d88\u64cd\u4f5c\u540e\u5e94\u4fdd\u6301\u9759\u9ed8<\/li>\n<\/ul>\n
    \n
    \u95ee\u9898\u4e8c\uff1aPowerToys \u4e0b\u62c9\u6846\u65e0\u6cd5\u88ab\u7a97\u53e3\u8bc6\u522b\u6355\u83b7<\/h2>\n
    \u73b0\u8c61<\/h3>\n
    PowerToys \u7684”\u56fe\u50cf\u5927\u5c0f\u8c03\u6574\u5668”\u7a97\u53e3\u6709\u4e00\u4e2a\u4e0b\u62c9\u5217\u8868\u6846\uff0c\u5176\u4ed6\u622a\u56fe\u5de5\u5177\uff08\u5982 QQ \u622a\u56fe\u3001ShareX\uff09\u90fd\u80fd\u6b63\u5e38\u8bc6\u522b\u548c\u6355\u83b7\u8fd9\u4e2a\u4e0b\u62c9\u6846\uff0c\u4f46\u6211\u4eec\u7684\u622a\u56fe\u5de5\u5177\u65e0\u6cd5\u8bc6\u522b\u3002<\/p>\n
    \u6392\u67e5\u8fc7\u7a0b<\/h3>\n
    \u7b2c\u4e00\u6b65\uff1a\u7a97\u53e3\u679a\u4e3e\u8bca\u65ad<\/h4>\n
    \u9996\u5148\u9700\u8981\u786e\u8ba4\u7a97\u53e3\u679a\u4e3e\u662f\u5426\u80fd\u770b\u5230\u8fd9\u4e2a\u4e0b\u62c9\u6846\u3002\u7f16\u5199\u8bca\u65ad\u811a\u672c\uff0c\u4f7f\u7528 EnumWindows<\/code> \u679a\u4e3e\u6240\u6709\u53ef\u89c1\u7a97\u53e3\uff1a<\/p>\n
    \u7a97\u53e3\u6807\u9898: \"\"  \u7c7b\u540d: \"ComboBox\"  \u6837\u5f0f: 0x96000000  \u6269\u5c55\u6837\u5f0f: 0x00000088\n  \u4f4d\u7f6e: (993, 422)  \u5927\u5c0f: 575x489\n  \u6240\u5c5e\u8fdb\u7a0bPID: 12345\n<\/code><\/pre>\n
    \u5173\u952e\u53d1\u73b0\uff1a
    \n1. \u4e0b\u62c9\u6846\u662f\u72ec\u7acb\u7a97\u53e3<\/strong>\uff1a\u5b83\u4e0d\u662f\u4e3b\u7a97\u53e3\u7684\u5b50\u63a7\u4ef6\uff0c\u800c\u662f\u4e00\u4e2a\u72ec\u7acb\u7684\u9876\u7ea7\u7a97\u53e3
    \n2. \u7a97\u53e3\u6807\u9898\u4e3a\u7a7a<\/strong>\uff1a\u88ab\u539f\u6709\u903b\u8f91\u4e2d title.is_empty()<\/code> \u8fc7\u6ee4\u6389\u4e86
    \n3. \u6269\u5c55\u6837\u5f0f\u5305\u542b WS_EX_TOOLWINDOW<\/code> \u548c WS_EX_NOACTIVATE<\/code><\/strong>\uff1a\u88ab\u6837\u5f0f\u8fc7\u6ee4\u903b\u8f91\u6392\u9664\u4e86<\/p>\n
    \u7b2c\u4e8c\u6b65\uff1a\u79fb\u9664\u8fc7\u6ee4\uff0c\u6dfb\u52a0\u56de\u9000<\/h4>\n
    \/\/ \u4fee\u590d\u524d\uff1a\u8fc7\u6ee4\u6389\u6807\u9898\u4e3a\u7a7a\u6216\u7279\u6b8a\u6837\u5f0f\u7684\u7a97\u53e3\nif title.is_empty() { continue; }\nif ex_style & WS_EX_TOOLWINDOW != 0 { continue; }\n\n\/\/ \u4fee\u590d\u540e\uff1a\u6807\u9898\u4e3a\u7a7a\u65f6\u4f7f\u7528\u7c7b\u540d\u4f5c\u4e3a\u56de\u9000\uff0c\u4e0d\u518d\u6309\u6837\u5f0f\u8fc7\u6ee4\nlet display_title = if title.trim().is_empty() {\n    class_name.clone()  \/\/ \u4f7f\u7528\u7a97\u53e3\u7c7b\u540d\u4f5c\u4e3a\u6807\u9898\n} else {\n    title.clone()\n};\n<\/code><\/pre>\n
    \u7b2c\u4e09\u6b65\uff1a\u540c\u8fdb\u7a0b\u7a97\u53e3\u5408\u5e76<\/h4>\n
    \u4e0b\u62c9\u6846\u7a97\u53e3\u548c\u4e3b\u7a97\u53e3\u5c5e\u4e8e\u540c\u4e00\u8fdb\u7a0b\uff0c\u4f46\u679a\u4e3e\u4e3a\u4e24\u4e2a\u72ec\u7acb\u7a97\u53e3\u3002\u7528\u6237\u671f\u671b\u70b9\u51fb\u65f6\u9ad8\u4eae\u6574\u4e2a\u533a\u57df\uff08\u4e3b\u7a97\u53e3 + \u4e0b\u62c9\u6846\uff09\uff0c\u800c\u4e0d\u662f\u5206\u522b\u9ad8\u4eae\u3002<\/p>\n
    \u5b9e\u73b0\u540c\u8fdb\u7a0b\u7a97\u53e3\u5408\u5e76\u903b\u8f91\uff1a<\/p>\n
    \/\/ \u4f7f\u7528 GetAncestor \u83b7\u53d6\u6839\u7a97\u53e3\uff0c\u5408\u5e76\u540c\u8fdb\u7a0b\u4e14\u91cd\u53e0\u6216\u76f8\u90bb\u7684\u7a97\u53e3\nfor i in 0..raw_windows.len() {\n    if used[i] { continue; }\n    let root_i = GetAncestor(hwnd_i, GA_ROOT);\n    let mut merge_rect = Rect::from(hwnd_i);\n\n    for j in (i+1)..raw_windows.len() {\n        if used[j] { continue; }\n        if pid_j == pid_i && (root_j == root_i) {\n            let rect_j = Rect::from(hwnd_j);\n            if merge_rect.overlaps_or_near(&rect_j, threshold=50) {\n                merge_rect = merge_rect.union(&rect_j);\n                used[j] = true;\n            }\n        }\n    }\n    \/\/ \u7528\u5408\u5e76\u540e\u7684\u77e9\u5f62\u521b\u5efa\u7a97\u53e3\u4fe1\u606f\n}\n<\/code><\/pre>\n
    \u5408\u5e76\u6548\u679c\uff1a\u4e3b\u7a97\u53e3 (1014,562 535×437) + \u4e0b\u62c9\u6846 (993,422 575×489) \u2192 \u5408\u5e76\u7a97\u53e3 (993,422 575×577)<\/p>\n
    \u7ecf\u9a8c\u603b\u7ed3<\/h3>\n
      \n
    • Windows \u4e2d\u5f88\u591a\u5f39\u51fa\u5f0f\u63a7\u4ef6\uff08\u4e0b\u62c9\u6846\u3001\u5f39\u51fa\u83dc\u5355\u3001\u5de5\u5177\u63d0\u793a\uff09\u90fd\u662f\u72ec\u7acb\u7a97\u53e3\uff0c\u4e0d\u662f\u7236\u7a97\u53e3\u7684\u5b50\u63a7\u4ef6<\/li>\n
    • \u7a97\u53e3\u679a\u4e3e\u65f6\u4e0d\u5e94\u8fc7\u5ea6\u8fc7\u6ee4\uff0c\u6807\u9898\u4e3a\u7a7a\u548c\u7279\u6b8a\u6837\u5f0f\u4e0d\u5e94\u4f5c\u4e3a\u6392\u9664\u6761\u4ef6<\/li>\n
    • \u540c\u8fdb\u7a0b\u7684\u591a\u4e2a\u7a97\u53e3\u5e94\u8003\u8651\u5408\u5e76\uff0c\u5426\u5219\u7528\u6237\u4f53\u9a8c\u4e0d\u4f73<\/li>\n
    • \u4f7f\u7528 GetAncestor(hwnd, GA_ROOT)<\/code> \u5224\u65ad\u7a97\u53e3\u662f\u5426\u5c5e\u4e8e\u540c\u4e00\u9876\u5c42\u7a97\u53e3\u6811<\/li>\n<\/ul>\n
      \n
      \u95ee\u9898\u4e09\uff1a\u4e0b\u62c9\u6846\u5728\u622a\u56fe\u65f6\u81ea\u52a8\u6536\u8d77<\/h2>\n
      \u73b0\u8c61<\/h3>\n
      \u5c55\u5f00\u4e0b\u62c9\u6846\u540e\u6309\u622a\u56fe\u5feb\u6377\u952e\uff0c\u4e0b\u62c9\u6846\u7acb\u523b\u6536\u8d77\uff0c\u622a\u56fe\u4e2d\u770b\u4e0d\u5230\u4e0b\u62c9\u6846\u5185\u5bb9\u3002<\/p>\n
      \u539f\u56e0\u5206\u6790<\/h3>\n
      \u622a\u56fe\u6d41\u7a0b\u4e2d\uff0c\u4e3b\u7a97\u53e3\u7684\u9690\u85cf\u64cd\u4f5c\u5bfc\u81f4\u7126\u70b9\u53d8\u5316\uff0c\u8fdb\u800c\u4f7f\u4e0b\u62c9\u6846\u5931\u53bb\u7126\u70b9\u800c\u5173\u95ed\uff1a<\/p>\n
      \u5feb\u6377\u952e\u89e6\u53d1 \u2192 \u9690\u85cf\u4e3b\u7a97\u53e3(\u7126\u70b9\u53d8\u5316) \u2192 \u4e0b\u62c9\u6846\u5931\u53bb\u7126\u70b9\u5173\u95ed \u2192 \u622a\u56fe \u2192 \u770b\u4e0d\u5230\u4e0b\u62c9\u6846\n<\/code><\/pre>\n
      \u4fee\u590d\uff1a\u8c03\u6574\u64cd\u4f5c\u987a\u5e8f<\/h3>\n
      \u6539\u4e3a\u5148\u622a\u56fe\uff0c\u518d\u9690\u85cf\u7a97\u53e3<\/strong>\uff1a<\/p>\n
      \u5feb\u6377\u952e\u89e6\u53d1 \u2192 \u7acb\u5373\u622a\u56fe(\u540c\u6b65) \u2192 \u9690\u85cf\u4e3b\u7a97\u53e3 \u2192 \u663e\u793a\u8986\u76d6\u5c42\n<\/code><\/pre>\n
      \u540c\u65f6\u4e3a\u4e3b\u7a97\u53e3\u6dfb\u52a0 WS_EX_NOACTIVATE<\/code> \u6837\u5f0f\uff0c\u9632\u6b62\u7a97\u53e3\u64cd\u4f5c\u62a2\u7126\u70b9\uff1a<\/p>\n
      fn hide_main_window(app: &AppHandle) {\n    if let Some(window) = app.get_webview_window(\"main\") {\n        let hwnd = window.hwnd().unwrap().0 as *mut std::ffi::c_void;\n        unsafe {\n            let ex_style = GetWindowLongPtrW(hwnd, GWL_EXSTYLE);\n            SetWindowLongPtrW(hwnd, GWL_EXSTYLE, ex_style | WS_EX_NOACTIVATE.0);\n        }\n        let _ = window.hide();\n    }\n}\n<\/code><\/pre>\n
      \u7ecf\u9a8c\u603b\u7ed3<\/h3>\n
        \n
      • \u622a\u56fe\u5de5\u5177\u7684\u622a\u56fe\u64cd\u4f5c\u5fc5\u987b\u5728\u4efb\u4f55\u7a97\u53e3\u72b6\u6001\u53d8\u5316\u4e4b\u524d\u6267\u884c<\/li>\n
      • WS_EX_NOACTIVATE<\/code> \u6837\u5f0f\u53ef\u4ee5\u8ba9\u7a97\u53e3\u5728\u4e0d\u62a2\u7126\u70b9\u7684\u60c5\u51b5\u4e0b\u663e\u793a\/\u9690\u85cf<\/li>\n
      • \u5168\u5c40\u5feb\u6377\u952e\u7684\u5904\u7406\u5e94\u5c3d\u91cf\u540c\u6b65\u6267\u884c\u622a\u56fe\uff0c\u907f\u514d\u5f02\u6b65\u5ef6\u8fdf\u5bfc\u81f4\u7126\u70b9\u53d8\u5316<\/li>\n<\/ul>\n
        \n
        \u95ee\u9898\u56db\uff1aGDI \u622a\u56fe\u65e0\u6cd5\u6355\u83b7\u5206\u5c42\u7a97\u53e3\uff08Layered Windows\uff09<\/h2>\n
        \u73b0\u8c61<\/h3>\n
        \u4f7f\u7528 xcap \u5e93\u622a\u56fe\u65f6\uff0c\u4e0b\u62c9\u6846\u7b49\u5206\u5c42\u7a97\u53e3\u5185\u5bb9\u7f3a\u5931\uff0c\u4f46 ShareX \u53ef\u4ee5\u6b63\u5e38\u6355\u83b7\u3002<\/p>\n
        \u539f\u56e0\u5206\u6790<\/h3>\n
        xcap \u5e93\u5e95\u5c42\u4f7f\u7528\u7684\u5c4f\u5e55\u6355\u83b7 API \u672a\u8bbe\u7f6e CAPTUREBLT<\/code> \u6807\u5fd7\u3002Windows \u7684 BitBlt<\/code> \u51fd\u6570\u5728\u6355\u83b7\u5c4f\u5e55\u65f6\uff0c\u9ed8\u8ba4\u4e0d\u5305\u542b\u5206\u5c42\u7a97\u53e3\uff08Layered Windows\uff09\uff0c\u5fc5\u987b\u52a0\u4e0a CAPTUREBLT<\/code> \u6807\u5fd7\u624d\u80fd\u6355\u83b7\u3002<\/p>\n
        \u4fee\u590d\uff1a\u5b9e\u73b0\u5e26 CAPTUREBLT \u7684 GDI \u622a\u56fe<\/h3>\n
        pub fn gdi_capture_all_monitors() -> Result<RgbaImage, String> {\n    unsafe {\n        let vx = GetSystemMetrics(SM_XVIRTUALSCREEN);\n        let vy = GetSystemMetrics(SM_YVIRTUALSCREEN);\n        let vw = GetSystemMetrics(SM_CXVIRTUALSCREEN);\n        let vh = GetSystemMetrics(SM_CYVIRTUALSCREEN);\n\n        let hdc_screen = GetWindowDC(GetDesktopWindow());\n        let hdc_mem = CreateCompatibleDC(hdc_screen);\n        let h_bitmap = CreateCompatibleBitmap(hdc_screen, vw, vh);\n        SelectObject(hdc_mem, h_bitmap as *mut c_void);\n\n        \/\/ \u5173\u952e\uff1aSRCCOPY | CAPTUREBLT \u786e\u4fdd\u6355\u83b7\u5206\u5c42\u7a97\u53e3\n        let result = BitBlt(\n            hdc_mem, 0, 0, vw, vh,\n            hdc_screen, vx, vy,\n            SRCCOPY | CAPTUREBLT,  \/\/ 0x00CC0020 | 0x40000000\n        );\n\n        \/\/ ... GetDIBits \u83b7\u53d6\u50cf\u7d20\u6570\u636e ...\n    }\n}\n<\/code><\/pre>\n
        Alpha \u901a\u9053\u9677\u9631<\/h3>\n
        GetDIBits<\/code> \u8fd4\u56de\u7684 32 \u4f4d\u50cf\u7d20\u6570\u636e\u4e2d\uff0calpha \u901a\u9053\u662f\u672a\u5b9a\u4e49\u7684<\/strong>\uff08\u901a\u5e38\u4e3a 0\uff09\u3002\u5982\u679c\u76f4\u63a5\u4fdd\u5b58\u4e3a 32 \u4f4d BMP \u5e76\u5728\u6d4f\u89c8\u5668\u4e2d\u6e32\u67d3\uff0c\u6240\u6709\u50cf\u7d20\u4f1a\u53d8\u6210\u900f\u660e\uff01<\/p>\n
        \/\/ \u5fc5\u987b\u5f3a\u5236\u8bbe\u7f6e alpha \u4e3a 255\uff08\u4e0d\u900f\u660e\uff09\nfor chunk in buffer.chunks_exact_mut(4) {\n    chunk.swap(0, 2);  \/\/ BGRA \u2192 RGBA\n    chunk[3] = 255;     \/\/ \u5f3a\u5236 alpha = \u4e0d\u900f\u660e\n}\n<\/code><\/pre>\n
        \u7ecf\u9a8c\u603b\u7ed3<\/h3>\n
          \n
        • Windows BitBlt<\/code> \u5fc5\u987b\u52a0 CAPTUREBLT<\/code> \u6807\u5fd7\u624d\u80fd\u6355\u83b7\u5206\u5c42\u7a97\u53e3<\/li>\n
        • GetDIBits<\/code> \u7684 alpha \u901a\u9053\u4e0d\u53ef\u4fe1\uff0c\u5fc5\u987b\u624b\u52a8\u8bbe\u4e3a 255<\/li>\n
        • \u622a\u56fe\u4fdd\u5b58\u683c\u5f0f\u5efa\u8bae\u4f7f\u7528 PNG \u800c\u975e BMP\uff0c\u907f\u514d\u6d4f\u89c8\u5668\u5bf9 32 \u4f4d BMP alpha \u901a\u9053\u7684\u6e32\u67d3\u95ee\u9898<\/li>\n<\/ul>\n
          \n
          \u95ee\u9898\u4e94\uff1a\u622a\u56fe\u8986\u76d6\u5c42\u663e\u793a\u7684\u56fe\u7247\u4e0e\u5b9e\u9645\u622a\u53d6\u7684\u56fe\u7247\u4e0d\u4e00\u81f4\uff08\u6700\u68d8\u624b\uff09<\/h2>\n
          \u73b0\u8c61<\/h3>\n
          \u622a\u53d6\u7684\u56fe\u7247\uff08\u4fdd\u5b58\u5230\u672c\u5730\uff09\u5305\u542b\u4e0b\u62c9\u6846\u5185\u5bb9\uff0c\u4f46\u622a\u56fe\u8986\u76d6\u5c42\u4e0a\u663e\u793a\u7684\u56fe\u7247\u4e2d\u4e0b\u62c9\u6846\u533a\u57df\u662f\u7a7a\u767d\u7684\u3002\u7a97\u53e3\u9ad8\u4eae\u6846\u6b63\u786e\u8986\u76d6\u4e86\u4e0b\u62c9\u6846\u533a\u57df\uff0c\u4f46\u56fe\u7247\u5185\u5bb9\u7f3a\u5931\u3002<\/p>\n
          \u6392\u67e5\u8fc7\u7a0b<\/h3>\n
          \u8fd9\u662f\u6700\u8017\u65f6\u7684\u95ee\u9898\uff0c\u6d89\u53ca\u524d\u540e\u7aef\u6570\u636e\u540c\u6b65\u7684\u591a\u4e2a\u73af\u8282\u3002<\/p>\n
          \u73af\u8282 1\uff1a\u4e8b\u4ef6\u65f6\u5e8f\u95ee\u9898<\/h4>\n
          \u6700\u521d\u4f7f\u7528 Tauri \u7684\u4e8b\u4ef6\u673a\u5236\u4f20\u9012\u622a\u56fe\u6570\u636e\uff1a<\/p>\n
          \/\/ \u540e\u7aef\uff1a\u53d1\u51fa\u4e8b\u4ef6\napp.emit(\"capture-ready\", &result)?;\n\n\/\/ \u524d\u7aef\uff1a\u76d1\u542c\u4e8b\u4ef6\nlisten<CaptureResult>(\"capture-ready\", (event) => {\n    setImageSrc(convertFileSrc(event.payload.path));\n});\n<\/code><\/pre>\n
          \u95ee\u9898\uff1acapture-ready<\/code> \u4e8b\u4ef6\u5728\u622a\u56fe\u7a97\u53e3 show()<\/code> \u4e4b\u540e\u7acb\u5373\u53d1\u51fa\uff0c\u4f46\u6b64\u65f6 webview \u53ef\u80fd\u8fd8\u6ca1\u52a0\u8f7d\u5b8c\u6210\uff0c\u4e8b\u4ef6\u76d1\u542c\u5668\u8fd8\u6ca1\u6ce8\u518c\uff0c\u5bfc\u81f4\u4e8b\u4ef6\u4e22\u5931<\/strong>\u3002<\/p>\n
          \u73af\u8282 2\uff1a\u6570\u636e\u88ab\u63d0\u524d\u6d88\u8d39<\/h4>\n
          \u6539\u7528 Tauri \u547d\u4ee4\u8ba9\u524d\u7aef\u4e3b\u52a8\u83b7\u53d6\u6570\u636e\uff0c\u4f46 start_capture<\/code> \u4e2d\u4f7f\u7528\u4e86 take_pending_capture()<\/code> \u6d88\u8d39\u4e86\u9884\u7f13\u5b58\u6570\u636e\uff1a<\/p>\n
          \/\/ start_capture \u4e2d\nlet result = take_pending_capture();  \/\/ \u6d88\u8d39\u4e86\u6570\u636e\uff01\n\n\/\/ \u524d\u7aef\u8c03\u7528 get_cached_capture \u65f6\npub fn get_cached_capture() -> Option<CaptureResult> {\n    pending.take()  \/\/ \u6570\u636e\u5df2\u7ecf\u88ab\u6d88\u8d39\u4e86\uff0c\u8fd4\u56de None\uff01\n}\n<\/code><\/pre>\n
          \u524d\u7aef\u62ff\u4e0d\u5230\u6570\u636e\uff0c\u53ea\u80fd\u4f9d\u8d56\u53ef\u80fd\u9519\u8fc7\u7684\u4e8b\u4ef6\uff0c\u6700\u7ec8\u52a0\u8f7d\u4e86\u9519\u8bef\u7684\u56fe\u7247\uff08\u53ef\u80fd\u662f\u4e4b\u524d\u7f13\u5b58\u7684\u65e7\u622a\u56fe\uff09\u3002<\/p>\n
          \u73af\u8282 3\uff1aBMP \u683c\u5f0f\u7684 Alpha \u901a\u9053\u95ee\u9898<\/h4>\n
          \u5373\u4f7f\u524d\u7aef\u62ff\u5230\u4e86\u6b63\u786e\u7684\u6587\u4ef6\u8def\u5f84\uff0c32 \u4f4d BMP \u5728\u6d4f\u89c8\u5668\u4e2d\u6e32\u67d3\u65f6\uff0calpha \u901a\u9053\u53ef\u80fd\u5bfc\u81f4\u67d0\u4e9b\u533a\u57df\u663e\u793a\u5f02\u5e38\u3002<\/p>\n
          \u6700\u7ec8\u4fee\u590d<\/h3>\n
          1. \u540e\u7aef\uff1a\u4f7f\u7528 peek \u800c\u975e take\uff0c\u4fdd\u7559\u6570\u636e\u7ed9\u524d\u7aef\u83b7\u53d6<\/strong><\/p>\n
          \/\/ start_capture \u4e2d\uff1apeek \u4e0d\u6d88\u8d39\u6570\u636e\nlet result = peek_pending_capture();\n\n\/\/ \u524d\u7aef\u547d\u4ee4\uff1a\u4e5f\u4f7f\u7528 peek\n#[tauri::command]\npub fn get_cached_capture() -> Option<CaptureResult> {\n    PENDING_CAPTURE.lock().map(|p| p.clone()).unwrap_or(None)\n}\n<\/code><\/pre>\n
          2. \u524d\u7aef\uff1a\u8f6e\u8be2\u83b7\u53d6 + \u4e8b\u4ef6\u76d1\u542c\u53cc\u4fdd\u9669<\/strong><\/p>\n
          useEffect(() => {\n    let gotData = false;\n    let pollInterval: number | null = null;\n\n    const tryGetData = () => {\n        if (gotData) return;\n        invoke<CaptureResult | null>(\"get_cached_capture\")\n            .then((result) => {\n                if (result) {\n                    gotData = true;\n                    setCaptureResult(result);\n                    setImageSrc(convertFileSrc(result.path));\n                    if (pollInterval) clearInterval(pollInterval);\n                }\n            });\n    };\n\n    \/\/ \u7acb\u5373\u5c1d\u8bd5 + \u8f6e\u8be2\n    tryGetData();\n    pollInterval = setInterval(tryGetData, 50);\n    setTimeout(() => { if (pollInterval) clearInterval(pollInterval); }, 2000);\n\n    \/\/ \u540c\u65f6\u76d1\u542c\u4e8b\u4ef6\u4f5c\u4e3a\u5907\u4efd\n    listen<CaptureResult>(\"capture-ready\", (event) => {\n        if (!gotData) { \/* ... *\/ }\n    });\n}, []);\n<\/code><\/pre>\n
          3. \u622a\u56fe\u683c\u5f0f\u6539\u4e3a PNG<\/strong><\/p>\n
          \/\/ \u4e4b\u524d\uff1asave_bmp_fast(&full_image, &path)?;\n\/\/ \u4e4b\u540e\uff1a\nfull_image.save(&path).map_err(|e| format!(\"PNG save failed: {}\", e))?;\n<\/code><\/pre>\n
          \u7ecf\u9a8c\u603b\u7ed3<\/h3>\n