rouggy
f3b607b15a
His startup.log stops after 'data dir ok', which rules out the two faults already covered and leaves the window creation itself — where a missing WebView2 runtime lands, sometimes as a silent exit rather than an error anyone can print. So the runtime's version is read from where it registers itself (both hives, and the 32-bit view where a per-machine install usually lands) and written BEFORE the window is attempted: 'WebView2: not found' answers the whole question in one line. Breadcrumbs now also mark entering wails.Run, reaching OnStartup, and the window painting — which places any launch that produces nothing between two known points.
50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
//go:build windows
|
|
|
|
package main
|
|
|
|
// Is the WebView2 runtime actually installed?
|
|
//
|
|
// It is the one dependency OpsLog cannot ship inside its own executable, and
|
|
// its absence is invisible: the process starts, Wails fails to create the
|
|
// browser environment, and on some machines that failure arrives as a silent
|
|
// exit rather than as an error we can print. So the version is read straight
|
|
// from where the runtime registers itself, and written to the startup log
|
|
// BEFORE the window is attempted — a log that says "WebView2: not found"
|
|
// answers the whole question in one line.
|
|
|
|
import (
|
|
"golang.org/x/sys/windows/registry"
|
|
)
|
|
|
|
// webview2Client is the runtime's own update-client GUID, the key it registers
|
|
// its version under. Documented by Microsoft for exactly this check.
|
|
const webview2Client = `Software\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}`
|
|
|
|
// webView2Version returns the installed runtime version, or "" if there is none.
|
|
//
|
|
// Both hives: a per-machine install writes to HKLM (and to the WOW6432 view of
|
|
// it on 64-bit Windows, which is where it usually lands), a per-user install to
|
|
// HKCU. Missing all three is the answer that matters.
|
|
func webView2Version() string {
|
|
type place struct {
|
|
key registry.Key
|
|
access uint32
|
|
}
|
|
for _, p := range []place{
|
|
{registry.CURRENT_USER, registry.QUERY_VALUE},
|
|
{registry.LOCAL_MACHINE, registry.QUERY_VALUE},
|
|
{registry.LOCAL_MACHINE, registry.QUERY_VALUE | registry.WOW64_32KEY},
|
|
} {
|
|
k, err := registry.OpenKey(p.key, webview2Client, p.access)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
v, _, err := k.GetStringValue("pv")
|
|
k.Close()
|
|
if err == nil && v != "" && v != "0.0.0.0" {
|
|
return v
|
|
}
|
|
}
|
|
return ""
|
|
}
|