zenity/notify_windows.go

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package zenity
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import (
"syscall"
"unsafe"
)
var (
shellNotifyIcon = shell32.NewProc("Shell_NotifyIconW")
)
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func notify(text string, options []Option) error {
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opts := applyOptions(options)
var args _NOTIFYICONDATA
args.StructSize = uint32(unsafe.Sizeof(args))
args.ID = 0x378eb49c // random
args.Flags = 0x00000010 // NIF_INFO
args.State = 0x00000001 // NIS_HIDDEN
info := syscall.StringToUTF16(text)
copy(args.Info[:len(args.Info)-1], info)
title := syscall.StringToUTF16(opts.title)
copy(args.InfoTitle[:len(args.InfoTitle)-1], title)
switch opts.icon {
case InfoIcon:
args.InfoFlags |= 0x1 // NIIF_INFO
case WarningIcon:
args.InfoFlags |= 0x2 // NIIF_WARNING
case ErrorIcon:
args.InfoFlags |= 0x3 // NIIF_ERROR
}
n, _, err := shellNotifyIcon.Call(0 /* NIM_ADD */, uintptr(unsafe.Pointer(&args)))
if n == 0 {
return err
}
shellNotifyIcon.Call(2 /* NIM_DELETE */, uintptr(unsafe.Pointer(&args)))
return nil
}
type _NOTIFYICONDATA struct {
StructSize uint32
Owner uintptr
ID uint32
Flags uint32
CallbackMessage uint32
Icon uintptr
Tip [128]uint16
State uint32
StateMask uint32
Info [256]uint16
Version uint32
InfoTitle [64]uint16
InfoFlags uint32
// GuidItem [16]byte
// BalloonIcon uintptr
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}