/// <summary>
/// The static Select method is the recommended way to create the SelectDevice
/// dialog.
/// </summary>
/// <remarks>
/// This method will display the SelectDevice dialog and block until a
/// selection has been made.
/// </remarks>
/// <param name="Title">A string that will be displayed as the title to the
/// SelectDevice dialog.</param>
/// <param name="AvailableDevices">An array of available Symbol.Device objects.
/// </param>
/// <param name="SelectIndex">The index of the initially selected device
/// object.</param>
/// <returns>The selected device object.</returns>
public static Symbol.Barcode2.Device Select(string Title,
Symbol.Barcode2.Device[] AvailableDevices, int SelectIndex)
{
OurAvailableDevices = AvailableDevices;
if (OurAvailableDevices.Length == 0)
{
return(null);
}
if (OurAvailableDevices.Length == 1)
{
return(OurAvailableDevices[0]);
}
OurTitle = Title;
DefaultIndex = SelectIndex;
int nSelection = new SelectDevice().Selection;
if (nSelection < 0)
{
return(null);
}
return(OurAvailableDevices[nSelection]);
}
/// <summary>
/// This function scales the given Form and its child controls in order to
/// make them completely viewable, based on the screen width and height.
/// </summary>
private static void Scale(SelectDevice frm)
{
int PSWAW = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width; // The width of the working area (in pixels).
int PSWAH = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height; // The height of the working area (in pixels).
// The entire screen has been taken in to account below
// in order to decide the half (S)VGA settings etc.
if (!((Screen.PrimaryScreen.Bounds.Width <= (1.5) * (Screen.PrimaryScreen.Bounds.Height)) &&
(Screen.PrimaryScreen.Bounds.Height <= (1.5) * (Screen.PrimaryScreen.Bounds.Width))))
{
if ((Screen.PrimaryScreen.Bounds.Width) > (Screen.PrimaryScreen.Bounds.Height))
{
PSWAW = (int)((1.33) * PSWAH); // If the width/height ratio goes beyond 1.5,
// the (longer) effective width is made shorter.
}
}
float dpiX = GetDPIX(); // Get the horizontal DPI value.
if (frm.bInitialScale == true) // If an initial scale (from scratch)
{
if (Symbol.Win32.PlatformType.IndexOf("PocketPC") != -1) // If the platform is either Pocket PC or Windows Mobile
{
frm.Width = PSWAW; // Set the form width. However this setting
// would be the ultimate one for Pocket PC (& Windows Mobile)devices.
// Just for the sake of consistency, it's explicitely specified here.
}
else
{
frm.Width = (int)((frm.Width) * (PSWAW)) / (frm.resWidthReference); // Set the form width for others (Windows CE devices).
}
}
if ((frm.Width <= maxLength * dpiX) || frm.bSkipMaxLen == true) // The calculation of the width & left values for each control
// without taking the maximum length restriction into consideration.
{
foreach (System.Windows.Forms.Control cntrl in frm.Controls)
{
cntrl.Width = ((cntrl.Width) * (frm.Width)) / (frm.resWidthReference);
cntrl.Left = ((cntrl.Left) * (frm.Width)) / (frm.resWidthReference);
if (cntrl is System.Windows.Forms.TabControl)
{
foreach (System.Windows.Forms.TabPage tabPg in cntrl.Controls)
{
foreach (System.Windows.Forms.Control cntrl2 in tabPg.Controls)
{
cntrl2.Width = (((cntrl2.Width) * (frm.Width)) / (frm.resWidthReference));
cntrl2.Left = (((cntrl2.Left) * (frm.Width)) / (frm.resWidthReference));
}
}
}
}
}
else
{ // The calculation of the width & left values for each control
// with the maximum length restriction taken into consideration.
foreach (System.Windows.Forms.Control cntrl in frm.Controls)
{
cntrl.Width = (int)(((cntrl.Width) * (PSWAW)*(maxLength * dpiX)) / (frm.resWidthReference * (frm.Width)));
cntrl.Left = (int)(((cntrl.Left) * (PSWAW)*(maxLength * dpiX)) / (frm.resWidthReference * (frm.Width)));
if (cntrl is System.Windows.Forms.TabControl)
{
foreach (System.Windows.Forms.TabPage tabPg in cntrl.Controls)
{
foreach (System.Windows.Forms.Control cntrl2 in tabPg.Controls)
{
cntrl2.Width = (int)(((cntrl2.Width) * (PSWAW)*(maxLength * dpiX)) / (frm.resWidthReference * (frm.Width)));
cntrl2.Left = (int)(((cntrl2.Left) * (PSWAW)*(maxLength * dpiX)) / (frm.resWidthReference * (frm.Width)));
}
}
}
}
frm.Width = (int)((frm.Width) * (maxLength * dpiX)) / (frm.Width);
}
frm.resWidthReference = frm.Width; // Set the reference width to the new value.
// A similar calculation is performed below for the height & top values for each control ...
if (!((Screen.PrimaryScreen.Bounds.Width <= (1.5) * (Screen.PrimaryScreen.Bounds.Height)) &&
(Screen.PrimaryScreen.Bounds.Height <= (1.5) * (Screen.PrimaryScreen.Bounds.Width))))
{
if ((Screen.PrimaryScreen.Bounds.Height) > (Screen.PrimaryScreen.Bounds.Width))
{
PSWAH = (int)((1.33) * PSWAW);
}
}
float dpiY = GetDPIY();
if (frm.bInitialScale == true)
{
if (Symbol.Win32.PlatformType.IndexOf("PocketPC") != -1)
{
frm.Height = PSWAH;
}
else
{
frm.Height = (int)((frm.Height) * (PSWAH)) / (frm.resHeightReference);
}
}
if ((frm.Height <= maxLength * dpiY) || frm.bSkipMaxLen == true)
{
foreach (System.Windows.Forms.Control cntrl in frm.Controls)
{
cntrl.Height = ((cntrl.Height) * (frm.Height)) / (frm.resHeightReference);
cntrl.Top = ((cntrl.Top) * (frm.Height)) / (frm.resHeightReference);
if (cntrl is System.Windows.Forms.TabControl)
{
foreach (System.Windows.Forms.TabPage tabPg in cntrl.Controls)
{
foreach (System.Windows.Forms.Control cntrl2 in tabPg.Controls)
{
cntrl2.Height = ((cntrl2.Height) * (frm.Height)) / (frm.resHeightReference);
cntrl2.Top = ((cntrl2.Top) * (frm.Height)) / (frm.resHeightReference);
}
}
}
}
}
else
{
foreach (System.Windows.Forms.Control cntrl in frm.Controls)
{
cntrl.Height = (int)(((cntrl.Height) * (PSWAH)*(maxLength * dpiY)) / (frm.resHeightReference * (frm.Height)));
cntrl.Top = (int)(((cntrl.Top) * (PSWAH)*(maxLength * dpiY)) / (frm.resHeightReference * (frm.Height)));
if (cntrl is System.Windows.Forms.TabControl)
{
foreach (System.Windows.Forms.TabPage tabPg in cntrl.Controls)
{
foreach (System.Windows.Forms.Control cntrl2 in tabPg.Controls)
{
cntrl2.Height = (int)(((cntrl2.Height) * (PSWAH)*(maxLength * dpiY)) / (frm.resHeightReference * (frm.Height)));
cntrl2.Top = (int)(((cntrl2.Top) * (PSWAH)*(maxLength * dpiY)) / (frm.resHeightReference * (frm.Height)));
}
}
}
}
frm.Height = (int)((frm.Height) * (maxLength * dpiY)) / (frm.Height);
}
frm.resHeightReference = frm.Height;
if (frm.bInitialScale == true)
{
frm.bInitialScale = false; // If this was the initial scaling (from scratch), it's now complete.
}
if (frm.bSkipMaxLen == true)
{
frm.bSkipMaxLen = false; // No need to consider the maximum length restriction now.
}
}
/// <summary>
/// Initialize the Barcode2 object.
/// </summary>
public bool InitBarcode()
{
// If the Barcode2 object is already initialized then fail the initialization.
if (myBarcode2 != null)
{
return(false);
}
else // Else initialize the reader.
{
try
{
// Get the device selected by the user.
Device MyDevice = SelectDevice.Select("Barcode", Symbol.Barcode2.Devices.SupportedDevices);
if (MyDevice == null)
{
MessageBox.Show(Resources.GetString("NoDeviceSelected"), Resources.GetString("SelectDevice"));
return(false);
}
// Create the reader, based on selected device.
myBarcode2 = new Barcode2(MyDevice);
// In this sample, we are setting the aim type to trigger.
switch (myBarcode2.Config.Reader.ReaderType)
{
case READER_TYPES.READER_TYPE_IMAGER:
myBarcode2.Config.Reader.ReaderSpecific.ImagerSpecific.AimType = AIM_TYPE.AIM_TYPE_TRIGGER;
break;
case READER_TYPES.READER_TYPE_LASER:
myBarcode2.Config.Reader.ReaderSpecific.LaserSpecific.AimType = AIM_TYPE.AIM_TYPE_TRIGGER;
break;
}
myBarcode2.Config.Reader.Set();
}
catch (OperationFailureException ex)
{
MessageBox.Show(Resources.GetString("InitBarcode") + "\n" +
Resources.GetString("OperationFailure") + "\n" + ex.Message +
"\n" +
Resources.GetString("Result") + " = " + (Results)((uint)ex.Result)
);
return(false);
}
catch (InvalidRequestException ex)
{
MessageBox.Show(Resources.GetString("InitBarcode") + "\n" +
Resources.GetString("InvalidRequest") + "\n" +
ex.Message);
return(false);
}
catch (InvalidIndexerException ex)
{
MessageBox.Show(Resources.GetString("InitBarcode") + "\n" +
Resources.GetString("InvalidIndexer") + "\n" +
ex.Message);
return(false);
};
return(true);
}
}
