Hey Nicolas, let's work through your Delphi 11 issues step by step—since you mentioned your English is limited and images would help, I'll keep each instruction super straightforward and easy to follow.

Here's how to adjust the font size for the code editor (the most common area folks want to tweak):

• Open Delphi 11, then click Tools in the top menu bar, then select Options (you can also use the shortcut Ctrl+Alt+O to open this faster)
• In the left sidebar of the Options window, expand the Editor section and click on Fonts and Colors
• On the right side, look for the Size dropdown right next to the Font selection box. Pick the size you want—you'll see a preview of the font change in the sample text below
• Quick note: If you want to adjust the font size for other parts of the IDE (like menu bars or toolbars), those are controlled by your Windows system font settings. You can change those by going to Windows Settings > Personalization > Fonts and tweaking the system font size there.

First, let's clarify: "complementary" fonts here are extra fonts that Delphi might use for specific features (like syntax highlighting for certain languages, international character support, or component labels) that aren't part of Windows' default font set. Here's how to find and manage them:

• Finding existing complementary fonts:
  • Open Windows Settings (press Win+I on your keyboard), then go to Personalization > Fonts
  • Use the search bar at the top to look for specific font names if you know what you're missing. If you're unsure, head back to Delphi's Tools > Options > Editor > Fonts and Colors—any font listed in the dropdown that's grayed out or marked as unavailable is a complementary font you might need to install
• Installing missing complementary fonts:
  • Download the font from a trusted source (stick to reputable font websites to avoid malware)
  • Once downloaded, right-click the font file (usually a .ttf or .otf file) and select Install—Windows will add it to your system's font library
  • Go back to Delphi's font settings, and you should now see the installed font in the dropdown to select it for use in the IDE

内容的提问来源于stack exchange，提问作者Nicolas Marchand