root
5da30ad058
drover.exe is now a GUI subsystem binary:
- Double-click no longer flashes a console window — a clean
smoke-test message box opens immediately.
- When run from cmd / PowerShell, AttachConsole reattaches stdout
and stderr to the parent terminal so '--version', 'check', etc.
still print as expected.
- MB_TOPMOST flag added to MessageBox so the window can't be
obscured by other windows on launch (this was the actual cause
of "I clicked but nothing happened" reports).
Verified locally: built with GOOS=windows GOARCH=amd64 -H=windowsgui;
running drover-gui.exe --version prints to PowerShell, drover-gui.exe
gui shows the message box on top of the active window.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
//go:build windows
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package main
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import (
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"fmt"
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"runtime"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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// showTestWindow displays a native Win32 MessageBox with build info.
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// The intent is to give end-users a visual smoke-test on first run:
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// double-click drover.exe (or run `drover gui`) and see that:
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// 1. the binary actually launches on Windows,
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// 2. the embedded version metadata is correct,
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// 3. the process can talk to user32.dll (i.e. the runtime is healthy).
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//
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// This is *not* the production GUI — that comes later via Wails. Here we
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// purposely use only stdlib + golang.org/x/sys/windows so this works
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// before any Wails/CGO machinery is wired up.
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func showTestWindow() {
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user32 := windows.NewLazySystemDLL("user32.dll")
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messageBox := user32.NewProc("MessageBoxW")
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body := fmt.Sprintf(
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"Drover-Go v%s\n\n"+
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"Commit: %s\n"+
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"Build: %s\n"+
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"Go: %s\n"+
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"Arch: %s/%s\n\n"+
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"OK — the binary launched and the Windows API is reachable.",
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Version, Commit, BuildDate, runtime.Version(), runtime.GOOS, runtime.GOARCH,
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)
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title := fmt.Sprintf("Drover-Go v%s — test window", Version)
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bodyW, _ := windows.UTF16PtrFromString(body)
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titleW, _ := windows.UTF16PtrFromString(title)
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// MB_OK | MB_ICONINFORMATION | MB_SETFOREGROUND | MB_TOPMOST
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// MB_TOPMOST is essential — without it the message box can pop up
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// behind other windows and the user thinks nothing happened.
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const flags = 0x00000000 | 0x00000040 | 0x00010000 | 0x00040000
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messageBox.Call(
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0,
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uintptr(unsafe.Pointer(bodyW)),
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uintptr(unsafe.Pointer(titleW)),
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flags,
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)
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}
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