Sketch background colour picker; build as GUI app (no console)#15
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1) New "Sketch" section in the side panel with a colour picker (default
white) controlling the background behind the sketch canvas — the area
around it (and the fullscreen letterbox). Baked into the iframe on run
and pushed live to a running sketch via postMessage ('set-bg').
2) Windows: build the target as a GUI app (WIN32_EXECUTABLE +
/ENTRY:mainCRTStartup so int main() stays the entry point), so no
console window opens when the .exe is launched (dev or distributed).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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What & why
1. Sketch background colour picker
New Sketch section in the right side panel with a colour picker (default white). It sets the background shown behind the sketch canvas — the area around it when the canvas is smaller than the preview, and the fullscreen letterbox.
<body>background when a sketch runs.postMessage({type:'set-bg'})(handled by the capture controller already injected in the iframe) — no restart.--sketch-bgCSS variable so the:fullscreenpreview letterbox matches.2. No console window
On Windows the target is now built as a GUI app:
WIN32_EXECUTABLE TRUEplus/ENTRY:mainCRTStartup(MSVC) so the standardint main()stays the entry point. Launching the.exe— dev build or the distributed one — no longer pops a console window.Trade-off:
std::cerr/std::coutlogging is no longer visible from a console (attach a debugger if needed during development). Noted in AGENTS.md.Reviewer notes
node --checkpasses; reconfigured + Debug build links cleanly.WINDOWS_CUI(3) toWINDOWS_GUI(2), and the app still launches and binds loopback.🤖 Generated with Claude Code