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Panama Tutorial

Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!

"I am always ready to learn, but I do not always like to be taught." – Winston Churchill

Tutorials

  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild

Prerequisites

More to read

About

"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples

openjdk.java.net/projects/panama/

Topics

ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Panama Tutorial
Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!
"I am always ready to learn, but I do not always like to be taught." – Winston Churchill
Tutorials
  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild
Prerequisites
More to read
About
"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples
openjdk.java.net/projects/panama/
Topics
ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Panama Tutorial
Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!
"I am always ready to learn, but I do not always like to be taught." – Winston Churchill
Tutorials
  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild
Prerequisites
More to read
About
"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples
openjdk.java.net/projects/panama/
Topics
ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt
Resources
Readme
License
Activity
Stars
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0 watching
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1 fork
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Panama Tutorial
Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!
"I am always ready to learn, but I do not always like to be taught." – Winston Churchill
Tutorials
  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild
Prerequisites
More to read
About
"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples
openjdk.java.net/projects/panama/
Topics
ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt
Resources
Readme
License
Activity
Stars
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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Panama Tutorial
Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!
"I am always ready to learn, but I do not always like to be taught." – Winston Churchill
Tutorials
  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild
Prerequisites
More to read
About
"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples
openjdk.java.net/projects/panama/
Topics
ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt
Resources
Readme
License
Activity
Stars
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Panama Tutorial
Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!
"I am always ready to learn, but I do not always like to be taught." – Winston Churchill
Tutorials
  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild
Prerequisites
More to read
About
"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples
openjdk.java.net/projects/panama/
Topics
ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt
Resources
Readme
License
Activity
Stars
5 stars
Watchers
0 watching
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1 fork
Report repository
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Used by
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Panama Tutorial
Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!
"I am always ready to learn, but I do not always like to be taught." – Winston Churchill
Tutorials
  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild
Prerequisites
More to read
About
"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples
openjdk.java.net/projects/panama/
Topics
ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt
Resources
Readme
License
Activity
Stars
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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Panama Tutorial
Warning: I'm quite new to C/C++ and programming Windows! It is likely that I'm following bad practices and giving just inappropriate examples. Please let me know if you have any questions, comments or suggestions!
"I am always ready to learn, but I do not always like to be taught." – Winston Churchill
Tutorials
  • 001 - Java calls C void method without parameters, C writes to console - gcc
  • 002 - C returns the sum of the two passed int parameters - gcc
  • 003 - C returns the center Point of two Point structs - gcc
  • 004 - Java calls C++ main (default entry point) and main2 without parameters, avoid name mangling, C++ writes to stdout - g++
  • 005 - Java calls C++/WinRT and prints number of devices to stdout by using Windows Runtime (WinRT) - Visual Studio 2019 solution and MSBuild
Prerequisites
More to read
About
"If non-Java programmers find some library useful and easy to access, it should be similarly accessible to Java programmers." - Interconnecting JVM and native code. Tutorials, learning by examples
openjdk.java.net/projects/panama/
Topics
ccppforeignforeign-function-interfacegccinterconnectinginteroperabilityjep-191jvmmsbuildnativeopenjdkopenjdk-panamatutorialsvisual-studiowindowswinrt
Resources
Readme
License
Activity
Stars
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