func (fb *FormBase) SaveState() error {
if err := fb.clientComposite.SaveState(); err != nil {
return err
}
var wp win.WINDOWPLACEMENT
wp.Length = uint32(unsafe.Sizeof(wp))
if !win.GetWindowPlacement(fb.hWnd, &wp) {
return lastError("GetWindowPlacement")
}
state := fmt.Sprint(
wp.Flags, wp.ShowCmd,
wp.PtMinPosition.X, wp.PtMinPosition.Y,
wp.PtMaxPosition.X, wp.PtMaxPosition.Y,
wp.RcNormalPosition.Left, wp.RcNormalPosition.Top,
wp.RcNormalPosition.Right, wp.RcNormalPosition.Bottom)
if err := fb.putState(state); err != nil {
return err
}
return nil
}
func (fb *FormBase) RestoreState() error {
if fb.isInRestoreState {
return nil
}
fb.isInRestoreState = true
defer func() {
fb.isInRestoreState = false
}()
state, err := fb.getState()
if err != nil {
return err
}
if state == "" {
return nil
}
var wp win.WINDOWPLACEMENT
if _, err := fmt.Sscan(state,
&wp.Flags, &wp.ShowCmd,
&wp.PtMinPosition.X, &wp.PtMinPosition.Y,
&wp.PtMaxPosition.X, &wp.PtMaxPosition.Y,
&wp.RcNormalPosition.Left, &wp.RcNormalPosition.Top,
&wp.RcNormalPosition.Right, &wp.RcNormalPosition.Bottom); err != nil {
return err
}
wp.Length = uint32(unsafe.Sizeof(wp))
if !win.SetWindowPlacement(fb.hWnd, &wp) {
return lastError("SetWindowPlacement")
}
return fb.clientComposite.RestoreState()
}