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apps/hello: comment the unusual program structure

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Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-03-31 14:51:21 +02:00
parent 8b2f6dbf13
commit 1d91eb8557
1 changed files with 6 additions and 0 deletions
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apps/hello/hello.go
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@@ -18,9 +18,13 @@ import (
) )
func main() { func main() {
// Never called on mobile, blocks forever on
// desktop.
app.Main() app.Main()
} }
// On iOS and Android main will never be called, so
// setting up the window must run in an init function.
func init() { func init() {
regular, err := sfnt.Parse(goregular.TTF) regular, err := sfnt.Parse(goregular.TTF)
if err != nil { if err != nil {
@@ -29,6 +33,8 @@ func init() {
var faces measure.Faces var faces measure.Faces
black := &image.Uniform{color.Black} black := &image.Uniform{color.Black}
face := faces.For(regular, ui.Dp(50)) face := faces.For(regular, ui.Dp(50))
// On iOS and Android app.NewWindow blocks, waiting
// for the platform to create a window.
go func() { go func() {
w, err := app.NewWindow(nil) w, err := app.NewWindow(nil)
if err != nil { if err != nil {