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In launcher.exe, the Tkinter messagebox displays the classic style. #320

Description

@Jesse205

Install source and version

  • Installed from the Windows Store
  • Installed with the MSIX from python.org
  • Installed with the MSI from python.org
  • Installed with winget install 9N7512CXL7T

Version: 26.1

Describe the bug
A clear and concise description of what the bug is.

When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

Image

To Reproduce
Steps to reproduce the behavior:

  1. Install Python 3.14 using pymanager
  2. Create tkinter-msgbox-example.py:
    importsysfromtkinterimportmessageboxifsys.platform=="win32":
    fromctypesimportwindllwindll.user32.SetProcessDPIAware()
    messagebox.showinfo(title="Example",message="Hello world")
  3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
  4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

Expected behavior
A clear and concise description of what you expected to happen.

Display in the modern style, just like when running pymanager or running the Python interpreter directly.

Image

Additional context
If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

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Metadata

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      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all
       blocks
      (function() {
      function addCopyButtons() {
      document.querySelectorAll('pre code').forEach(function(codeBlock) {
      if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
      codeBlock.parentElement.setAttribute('data-copy-added', 'true');
      var btn = document.createElement('button');
      btn.textContent = 'Copy';
      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;';
      btn.onmouseover = function() { this.style.opacity = '1'; };
      btn.onmouseout = function() { this.style.opacity = '0.7'; };
      btn.onclick = function() {
      navigator.clipboard.writeText(codeBlock.textContent).then(function() {
      btn.textContent = 'Copied!';
      setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
      });
      };
      codeBlock.parentElement.style.position = 'relative';
      codeBlock.parentElement.appendChild(btn);
      });
      }
      addCopyButtons();
      // Re-run on dynamic content
      var observer = new MutationObserver(addCopyButtons);
      observer.observe(document.body, { childList: true, subtree: true });
      })();
      }
      } catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
      })();
      (function(){
      try {
      var __m = "github.com";
      var __re = new RegExp('^' + "github\\.com" + '
      In launcher.exe, the Tkinter messagebox displays the classic style. · Issue #320 · python/pymanager · GitHub
      Skip to content

      In launcher.exe, the Tkinter messagebox displays the classic style. #320

      Description

      @Jesse205

      Install source and version

      • Installed from the Windows Store
      • Installed with the MSIX from python.org
      • Installed with the MSI from python.org
      • Installed with winget install 9N7512CXL7T

      Version: 26.1

      Describe the bug
      A clear and concise description of what the bug is.

      When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

      Image

      To Reproduce
      Steps to reproduce the behavior:

      1. Install Python 3.14 using pymanager
      2. Create tkinter-msgbox-example.py:
        importsysfromtkinterimportmessageboxifsys.platform=="win32":
        fromctypesimportwindllwindll.user32.SetProcessDPIAware()
        messagebox.showinfo(title="Example",message="Hello world")
      3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
      4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

      Expected behavior
      A clear and concise description of what you expected to happen.

      Display in the modern style, just like when running pymanager or running the Python interpreter directly.

      Image

      Additional context
      If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

      Metadata

      Metadata

      Assignees

      No one assigned

        Labels

        No labels
        No labels

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        No projects

          Milestone

          No milestone

          Relationships

          None yet

          Development

          No branches or pull requests

          Issue actions

          , 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' In launcher.exe, the Tkinter messagebox displays the classic style. · Issue #320 · python/pymanager · GitHub
          Skip to content

          In launcher.exe, the Tkinter messagebox displays the classic style. #320

          Description

          @Jesse205

          Install source and version

          • Installed from the Windows Store
          • Installed with the MSIX from python.org
          • Installed with the MSI from python.org
          • Installed with winget install 9N7512CXL7T

          Version: 26.1

          Describe the bug
          A clear and concise description of what the bug is.

          When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

          Image

          To Reproduce
          Steps to reproduce the behavior:

          1. Install Python 3.14 using pymanager
          2. Create tkinter-msgbox-example.py:
            importsysfromtkinterimportmessageboxifsys.platform=="win32":
            fromctypesimportwindllwindll.user32.SetProcessDPIAware()
            messagebox.showinfo(title="Example",message="Hello world")
          3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
          4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

          Expected behavior
          A clear and concise description of what you expected to happen.

          Display in the modern style, just like when running pymanager or running the Python interpreter directly.

          Image

          Additional context
          If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

          Metadata

          Metadata

          Assignees

          No one assigned

            Labels

            No labels
            No labels

            Projects

            No projects

              Milestone

              No milestone

              Relationships

              None yet

              Development

              No branches or pull requests

              Issue actions

              , 'i'); if (__m === '*' || __re.test(location.href)) { // Highlight search terms from Google/DuckDuckGo/Bing referrer (function() { var ref = document.referrer; var terms = []; if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) { var url = new URL(ref); var q = url.searchParams.get('q') || url.searchParams.get('p'); if (q) { terms = q.split(/\s+/).filter(function(t) { return t.length > 2; }); } } if (terms.length === 0) return; var style = document.createElement('style'); style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }'; document.head.appendChild(style); function highlight(node) { if (node.nodeType === 3) { // text node var text = node.textContent; var found = false; terms.forEach(function(term) { var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' In launcher.exe, the Tkinter messagebox displays the classic style. · Issue #320 · python/pymanager · GitHub
              Skip to content

              In launcher.exe, the Tkinter messagebox displays the classic style. #320

              Description

              @Jesse205

              Install source and version

              • Installed from the Windows Store
              • Installed with the MSIX from python.org
              • Installed with the MSI from python.org
              • Installed with winget install 9N7512CXL7T

              Version: 26.1

              Describe the bug
              A clear and concise description of what the bug is.

              When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

              Image

              To Reproduce
              Steps to reproduce the behavior:

              1. Install Python 3.14 using pymanager
              2. Create tkinter-msgbox-example.py:
                importsysfromtkinterimportmessageboxifsys.platform=="win32":
                fromctypesimportwindllwindll.user32.SetProcessDPIAware()
                messagebox.showinfo(title="Example",message="Hello world")
              3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
              4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

              Expected behavior
              A clear and concise description of what you expected to happen.

              Display in the modern style, just like when running pymanager or running the Python interpreter directly.

              Image

              Additional context
              If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

              Metadata

              Metadata

              Assignees

              No one assigned

                Labels

                No labels
                No labels

                Projects

                No projects

                  Milestone

                  No milestone

                  Relationships

                  None yet

                  Development

                  No branches or pull requests

                  Issue actions

                  , 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' In launcher.exe, the Tkinter messagebox displays the classic style. · Issue #320 · python/pymanager · GitHub
                  Skip to content

                  In launcher.exe, the Tkinter messagebox displays the classic style. #320

                  Description

                  @Jesse205

                  Install source and version

                  • Installed from the Windows Store
                  • Installed with the MSIX from python.org
                  • Installed with the MSI from python.org
                  • Installed with winget install 9N7512CXL7T

                  Version: 26.1

                  Describe the bug
                  A clear and concise description of what the bug is.

                  When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

                  Image

                  To Reproduce
                  Steps to reproduce the behavior:

                  1. Install Python 3.14 using pymanager
                  2. Create tkinter-msgbox-example.py:
                    importsysfromtkinterimportmessageboxifsys.platform=="win32":
                    fromctypesimportwindllwindll.user32.SetProcessDPIAware()
                    messagebox.showinfo(title="Example",message="Hello world")
                  3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
                  4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

                  Expected behavior
                  A clear and concise description of what you expected to happen.

                  Display in the modern style, just like when running pymanager or running the Python interpreter directly.

                  Image

                  Additional context
                  If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

                  Metadata

                  Metadata

                  Assignees

                  No one assigned

                    Labels

                    No labels
                    No labels

                    Projects

                    No projects

                      Milestone

                      No milestone

                      Relationships

                      None yet

                      Development

                      No branches or pull requests

                      Issue actions

                      , 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' In launcher.exe, the Tkinter messagebox displays the classic style. · Issue #320 · python/pymanager · GitHub
                      Skip to content

                      In launcher.exe, the Tkinter messagebox displays the classic style. #320

                      Description

                      @Jesse205

                      Install source and version

                      • Installed from the Windows Store
                      • Installed with the MSIX from python.org
                      • Installed with the MSI from python.org
                      • Installed with winget install 9N7512CXL7T

                      Version: 26.1

                      Describe the bug
                      A clear and concise description of what the bug is.

                      When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

                      Image

                      To Reproduce
                      Steps to reproduce the behavior:

                      1. Install Python 3.14 using pymanager
                      2. Create tkinter-msgbox-example.py:
                        importsysfromtkinterimportmessageboxifsys.platform=="win32":
                        fromctypesimportwindllwindll.user32.SetProcessDPIAware()
                        messagebox.showinfo(title="Example",message="Hello world")
                      3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
                      4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

                      Expected behavior
                      A clear and concise description of what you expected to happen.

                      Display in the modern style, just like when running pymanager or running the Python interpreter directly.

                      Image

                      Additional context
                      If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

                      Metadata

                      Metadata

                      Assignees

                      No one assigned

                        Labels

                        No labels
                        No labels

                        Projects

                        No projects

                          Milestone

                          No milestone

                          Relationships

                          None yet

                          Development

                          No branches or pull requests

                          Issue actions

                          , 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' In launcher.exe, the Tkinter messagebox displays the classic style. · Issue #320 · python/pymanager · GitHub
                          Skip to content

                          In launcher.exe, the Tkinter messagebox displays the classic style. #320

                          Description

                          @Jesse205

                          Install source and version

                          • Installed from the Windows Store
                          • Installed with the MSIX from python.org
                          • Installed with the MSI from python.org
                          • Installed with winget install 9N7512CXL7T

                          Version: 26.1

                          Describe the bug
                          A clear and concise description of what the bug is.

                          When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

                          Image

                          To Reproduce
                          Steps to reproduce the behavior:

                          1. Install Python 3.14 using pymanager
                          2. Create tkinter-msgbox-example.py:
                            importsysfromtkinterimportmessageboxifsys.platform=="win32":
                            fromctypesimportwindllwindll.user32.SetProcessDPIAware()
                            messagebox.showinfo(title="Example",message="Hello world")
                          3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
                          4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

                          Expected behavior
                          A clear and concise description of what you expected to happen.

                          Display in the modern style, just like when running pymanager or running the Python interpreter directly.

                          Image

                          Additional context
                          If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

                          Metadata

                          Metadata

                          Assignees

                          No one assigned

                            Labels

                            No labels
                            No labels

                            Projects

                            No projects

                              Milestone

                              No milestone

                              Relationships

                              None yet

                              Development

                              No branches or pull requests

                              Issue actions

                              , 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); In launcher.exe, the Tkinter messagebox displays the classic style. · Issue #320 · python/pymanager · GitHub
                              Skip to content

                              In launcher.exe, the Tkinter messagebox displays the classic style. #320

                              Description

                              @Jesse205

                              Install source and version

                              • Installed from the Windows Store
                              • Installed with the MSIX from python.org
                              • Installed with the MSI from python.org
                              • Installed with winget install 9N7512CXL7T

                              Version: 26.1

                              Describe the bug
                              A clear and concise description of what the bug is.

                              When creating a tkinter messagebox in Python launched by launcher.exe, the messagebox displays in the classic style, regardless of whether it is a console program.

                              Image

                              To Reproduce
                              Steps to reproduce the behavior:

                              1. Install Python 3.14 using pymanager
                              2. Create tkinter-msgbox-example.py:
                                importsysfromtkinterimportmessageboxifsys.platform=="win32":
                                fromctypesimportwindllwindll.user32.SetProcessDPIAware()
                                messagebox.showinfo(title="Example",message="Hello world")
                              3. Navigate to the folder: C:\Users\USER\AppData\Local\Python\bin
                              4. Drag tkinter-msgbox-example.py onto python.exe or pythonw.exe

                              Expected behavior
                              A clear and concise description of what you expected to happen.

                              Display in the modern style, just like when running pymanager or running the Python interpreter directly.

                              Image

                              Additional context
                              If you have log files (check your %TEMP% directory!), drag-and-drop them here to include them.

                              Metadata

                              Metadata

                              Assignees

                              No one assigned

                                Labels

                                No labels
                                No labels

                                Projects

                                No projects

                                  Milestone

                                  No milestone

                                  Relationships

                                  None yet

                                  Development

                                  No branches or pull requests

                                  Issue actions