lpintes
commented
2 years ago I would add
AssignTo: &w
to the MainWindow declaration.
Dňa 2. 12. 2021 o 12:04 xcd0 napísal(a):
I would like to know how to close the window normally when the button is clicked. My source code below ends with an exception.
package main
import ( ."github.com/lxn/walk/declarative" )
func main() { Run() // something Run() }
func Run() { var w MainWindow w = MainWindow{ Title:"test", Size:Size{400,200}, Layout:VBox{}, Children: []Widget{ PushButton{ Text:"Exit", OnClicked:func() { (**w.AssignTo).Close() }, }, }, } w.Run() }
panic: runtime error: invalid memory address or nil pointer dereference [signal 0xc0000005 code=0x0 addr=0x0 pc=0x64de7f] goroutine 1 [running, locked to thread]: main.Run.func1() example.com/test/main.go:24 +0x1f github.com/lxn/walk.(*EventPublisher).Publish(0xc00004fb30) ***@***.***/event.go:71 +0xf0 github.com/lxn/walk.(*Button).raiseClicked(...) ***@***.***/button.go:195 github.com/lxn/walk.(*Button).WndProc(0xc00004f800, 0xc00011a5d0, 0x111, 0x6, 0x5c10f4) ***@***.***/button.go:210 +0x7f github.com/lxn/walk.(*PushButton).WndProc(0xc00004f800, 0x6, 0x111, 0x0, 0xc00004f000) ***@***.***/pushbutton.go:115 +0x16b github.com/lxn/walk.(*ContainerBase).WndProc(0xc00006f180, 0x0, 0x111, 0x6, 0x5c10f4) ***@***.***/container.go:345 +0x46d github.com/lxn/walk.defaultWndProc(0x0, 0x111, 0xc000114058, 0xc000113d58) ***@***.***/window.go:2159 +0xb9 syscall.Syscall6(0x7ffc7c0de3f0, 0x5, 0x7ffc4c4718f0, 0x5c10f4, 0x202, 0x0, 0x300db, 0x0) runtime/syscall_windows.go:493 +0xfa github.com/lxn/win.CallWindowProc(0xc00004f800, 0xc00004f000, 0x202, 0xc000000400, 0x0) ***@***.***/user32.go:2138 +0x86 github.com/lxn/walk.(*WindowBase).WndProc(0xc00004f800, 0x0, 0x202, 0x0, 0x300db) ***@***.***/window.go:2511 +0xc68 github.com/lxn/walk.(*Button).WndProc(0xc00004f800, 0xc0001145d0, 0x202, 0x0, 0x300db) ***@***.***/button.go:218 +0x117 github.com/lxn/walk.(*PushButton).WndProc(0xc00004f800, 0xc0001146b0, 0x202, 0xc000114938, 0xc000114638) ***@***.***/pushbutton.go:115 +0x16b github.com/lxn/walk.defaultWndProc(0x0, 0x202, 0xc0001146b0, 0x0) ***@***.***/window.go:2159 +0xb9 syscall.Syscall(0x7ffc7c0dbd60, 0x2, 0x3212b4, 0x2006a6911a0, 0x0) runtime/syscall_windows.go:479 +0xf4 github.com/lxn/win.IsDialogMessage(0x2006a6911a0, 0x2006a6911a0) ***@***.***/user32.go:2834 +0x65 github.com/lxn/walk.(*FormBase).mainLoop(0xc00004f000) ***@***.***/mainloop_default.go:35 +0xd7 github.com/lxn/walk.(*FormBase).Run(0xc00004f000) ***@***.***/form.go:375 +0x1af github.com/lxn/walk/declarative.MainWindow.Run({{{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, ...}, ...}) ***@***.***/declarative/mainwindow.go:213 +0x94 main.Run() example.com/test/main.go:29 +0x225 main.main() example.com/test/main.go:9 +0x17I understand it's not the right way, of course, but I don't know the right way.
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xcd0
I would like to know how to close the window normally when the button is clicked. My source code below ends with an exception.
I understand it's not the right way, of course, but I don't know the right way.