英文:
How to create and show a customer screen in a POS software using visual basic
问题
我正在使用Visual Basic构建POS软件，尝试在客户面向屏幕上显示客户屏幕。
使用的设备是
APT 200系列 - 触摸屏POS
我已经创建了一个客户表单，并在主表单的加载事件中使用了以下代码：
Dim secondaryDisplay As Screen = Screen.AllScreens(1)
'为辅助显示创建一个新窗体
Dim customerscreen As New Form()
'将窗体属性设置为在辅助显示上显示
customerscreen.StartPosition = FormStartPosition.Manual
customerscreen.Location = secondaryDisplay.Bounds.Location
customerscreen.WindowState = FormWindowState.Maximized
customerscreen.FormBorderStyle = FormBorderStyle.None
'在辅助显示上显示窗体
customerscreen.Show()
但在以下行中显示以下错误：
Dim secondaryDisplay As Screen = Screen.AllScreens(1)
索引超出了数组的界限。
有人可以帮忙吗？
英文:
I am building a POS software using visual basic and trying to display the customer screen on the customer facing screen.
device used is
APT 200 series - touch screen POS
i have created a customer form and used the following code in the main form load event
Dim secondaryDisplay As Screen = Screen.AllScreens(1)
'Create a new form for the secondary display
Dim customerscreen As New Form()
'Set the form's properties to display on the secondary display
customerscreen.StartPosition = FormStartPosition.Manual
customerscreen.Location = secondaryDisplay.Bounds.Location
customerscreen.WindowState = FormWindowState.Maximized
customerscreen.FormBorderStyle = FormBorderStyle.None
'Show the form on the secondary display
customerscreen.Show()
but showing the following error in the following line
Dim secondaryDisplay As Screen = Screen.AllScreens(1)
Index was outside the bounds of the array.
can anyone help on this
答案1
得分: 3
这意味着它没有检测到辅助监视器。返回的数组只包含1个监视器。这就是为什么出现 Index was outside the bounds of the array 错误。
我建议在尝试获取第二个屏幕之前检查数组的长度。
如果数组只包含1个项目，那意味着你无法选择第二个屏幕的值。
英文:
It means that it does not detect a secondary monitor. The array returned contains only 1 monitor. That is why you have the Index was outside the bounds of the array. error.
I suggest you to check the length of the array before trying to get the second screen.
If the array contains only 1 item, that means you can't pick a second screen value.
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