set cargo amoutninput to select all instead of inserstion end

gui/builtinContextMenus/amount.py

@@ -72,6 +72,7 @@ class AmountChanger(wx.Dialog):
 
         self.input = wx.TextCtrl(self, wx.ID_ANY, style=wx.TE_PROCESS_ENTER)
         self.input.SetValue(str(value))
+        self.input.SelectAll()
 
         bSizer1.Add(self.input, 0, wx.LEFT | wx.RIGHT | wx.EXPAND, 15)
 
@@ -82,7 +83,6 @@ class AmountChanger(wx.Dialog):
         bSizer1.Add(bSizer3, 0, wx.ALL | wx.EXPAND, 10)
 
         self.input.SetFocus()
-        self.input.SetInsertionPointEnd()
         self.input.Bind(wx.EVT_CHAR, self.onChar)
         self.input.Bind(wx.EVT_TEXT_ENTER, self.processEnter)
         self.SetSizer(bSizer1)