我们已经启动了一个打印项目，但是在告诉打印机选择哪种纸张尺寸时，我们完全陷入了僵局。
每次选择纸张尺寸并进行打印时，打印机预览每次都会显示A4，而不是我们选择的尺寸，尽管如果打开打印首选项会选择正确的尺寸。
namespace CPrint
{
/// <summary>
/// Логика взаимодействия для ucPrint.xaml
/// </summary>
public partial class ucPrint : UserControl
{
bool SystemChange = false;
double? PaperHeight = null;
double? PaperWidth = null;
public ucPrint()
{
InitializeComponent();
App.Localization.AddControls(this, new string[]
{
"cHeader", "lPrinter", "lCopies","lLayout", "bPrintSettings","lColorManagement","lPrinterProfile", "lPositionSize", "cCenter", "lTop", "lLeft"
});
}
public static BitmapSource ConvertColorProfile(BitmapSource bitmapSource, ColorContext sourceProfile, ColorContext destinationProfile)
{
var bitmapConverted = new ColorConvertedBitmap();
bitmapConverted.BeginInit();
bitmapConverted.Source = bitmapSource;
//bitmapConverted.SourceColorContext = new ColorContext(PixelFormats.Pbgra32);// bitmapSourceFrame.ColorContexts == null ? sourceProfile : bitmapSourceFrame.ColorContexts[0];
bitmapConverted.SourceColorContext = sourceProfile;
bitmapConverted.DestinationColorContext = destinationProfile;
bitmapConverted.DestinationFormat = PixelFormats.Bgra32;
bitmapConverted.EndInit();
return bitmapConverted;
}
private void BPrint_Click(object sender, RoutedEventArgs e)
{
if (cPrinter.SelectedItem == null) { MessageBox.Show("Printer not set"); return; }
if (cPaperSize.SelectedItem == null) { MessageBox.Show("Paper size not set"); return; }
double marging = 30;
if (App.CurrentTemplateControl != null)
{
var img = App.CurrentTemplateControl.GetImage(true);
if (img == null) return;
var image = new Image() { Source = img };
if (cColorProfile != null && cColorProfile.SelectedItem != null && cColorProfile.SelectedIndex > 0)
{
Uri sourceProfileUri = new Uri((cColorProfile.SelectedItem as FileInfo).FullName);
image.Source = ConvertColorProfile(image.Source as BitmapSource, new ColorContext(PixelFormats.Pbgra32), new ColorContext(sourceProfileUri));
}
if (cMirror.IsChecked == true)
{
var transformGroup = new TransformGroup();
transformGroup.Children.Add(new ScaleTransform(-1, 1, img.Width / 2, img.Height / 2));
image.RenderTransform = transformGroup;
}
PrintDialog printDialog2 = new PrintDialog();
Size size = (Size)(cPaperSize.SelectedItem as ComboBoxItem).DataContext;
printDialog2.PrintQueue = new PrintQueue(new PrintServer(), cPrinter.Text);
//if (printDialog2.ShowDialog() == true)
//{
//Size size = new Size(printDialog2.PrintableAreaWidth, printDialog2.PrintableAreaHeight);
printDialog2.PrintTicket = new PrintTicket()
{
PageMediaSize = new PageMediaSize(size.Width, size.Height)
};
//printDialog2.PrintTicket
Canvas canvas = new Canvas()
{
//Height = PrintContext.ToPx(size.Height),
//Width = PrintContext.ToPx(size.Width),
Height = size.Height,
Width = size.Width,
Background = Brushes.White
};
canvas.Children.Add(image);
double scaleW = (size.Width - marging * 2) / img.Width;
double scaleH = (size.Height - marging * 2) / img.Height;
if (scaleW < 1 || scaleH < 1)
{
Canvas.SetLeft(image, marging);
Canvas.SetTop(image, marging);
double scale = scaleW > scaleH ? scaleH : scaleW;
var transformGroup = new TransformGroup();
transformGroup.Children.Add(new ScaleTransform(scale, scale, 0, 0));
image.RenderTransform = transformGroup;
}
else if (cCenter.IsChecked == true)
{
Canvas.SetLeft(image, size.Width / 2 - img.Width / 2);
Canvas.SetTop(image, size.Height / 2 - img.Height / 2);
}
else
{
Canvas.SetLeft(image, marging);
Canvas.SetTop(image, marging);
}
printDialog2.PrintVisual(canvas, "Print");
//}
}
return;
}
private void CPrinter_DropDownOpened(object sender, EventArgs e)
{
SystemChange = true;
var lastPrinterName = cPrinter.Text;
cPrinter.Items.Clear();
int index = -1;
cPrinter.SelectedIndex = index;
foreach (string strPrinter in System.Drawing.Printing.PrinterSettings.InstalledPrinters)
{
index++;
cPrinter.Items.Add(strPrinter);
if (strPrinter == lastPrinterName)
cPrinter.SelectedIndex = index;
}
SystemChange = false;
}
private void CPrinter_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count > 0 && SystemChange == false)
{
var printer = new System.Drawing.Printing.PrinterSettings();
printer.PrinterName = e.AddedItems[0].ToString();
var lastPaperName = cPaperSize.Text;
cPaperSize.Items.Clear();
int index = -1;
cPaperSize.SelectedIndex = index;
foreach (System.Drawing.Printing.PaperSize paper in printer.PaperSizes)
{
index++;
cPaperSize.Items.Add(new ComboBoxItem() { Content = paper.PaperName, DataContext = new Size(paper.Width, paper.Height) });
if (paper.PaperName == lastPaperName)
cPaperSize.SelectedIndex = index;
}
Properties.Settings.Default.DefaultDirectPrinter = printer.PrinterName;
Properties.Settings.Default.Save();
}
}
private void CPaperSize_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count > 0)
{
Properties.Settings.Default.DefaultDirectPaper = ((ComboBoxItem)e.AddedItems[0]).Content.ToString();
Properties.Settings.Default.Save();
}
}
public void UpdateControls()
{
SystemChange = true;
if (!String.IsNullOrWhiteSpace(Properties.Settings.Default.DefaultDirectPrinter))
{
SystemChange = true;
var lastPrinterName = cPrinter.Text;
cPrinter.Items.Clear();
int index = -1;
cPrinter.SelectedIndex = index;
foreach (string strPrinter in System.Drawing.Printing.PrinterSettings.InstalledPrinters)
{
index++;
cPrinter.Items.Add(strPrinter);
if (strPrinter == Properties.Settings.Default.DefaultDirectPrinter)
cPrinter.SelectedIndex = index;
}
SystemChange = false;
if (!String.IsNullOrWhiteSpace(Properties.Settings.Default.DefaultDirectPaper))
{
var printer = new System.Drawing.Printing.PrinterSettings();
printer.PrinterName = Properties.Settings.Default.DefaultDirectPrinter;
string lastPaperName = Properties.Settings.Default.DefaultDirectPaper;
cPaperSize.Items.Clear();
int indexP = -1;
cPaperSize.SelectedIndex = indexP;
foreach (System.Drawing.Printing.PaperSize paper in printer.PaperSizes)
{
indexP++;
cPaperSize.Items.Add(new ComboBoxItem() { Content = paper.PaperName, DataContext = new Size(paper.Width, paper.Height) });
if (paper.PaperName == lastPaperName)
cPaperSize.SelectedIndex = indexP;
}
}
}
if (!String.IsNullOrWhiteSpace(Properties.Settings.Default.DefaultDirectColorProfile))
{
var lastValue = Properties.Settings.Default.DefaultDirectColorProfile;
cColorProfile.Items.Clear();
int index = -1;
cColorProfile.SelectedIndex = index;
cColorProfile.Items.Add("");
index++;
foreach (var file in App.Icc.items)
{
index++;
cColorProfile.Items.Add(file);
if (file.FullName == lastValue)
cColorProfile.SelectedIndex = index;
}
}
SystemChange = false;
}
private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
}
private void CColorProfile_DropDownOpened(object sender, EventArgs e)
{
var lastValue = cColorProfile.Text;
cColorProfile.Items.Clear();
int index = -1;
cColorProfile.SelectedIndex = index;
cColorProfile.Items.Add("");
index++;
foreach (var file in App.Icc.items)
{
index++;
cColorProfile.Items.Add(file);
if (file.Name == lastValue)
cColorProfile.SelectedIndex = index;
}
}
private void CColorProfile_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (!SystemChange)
{
Properties.Settings.Default.DefaultDirectColorProfile = (cColorProfile.SelectedItem as FileInfo)?.FullName;
Properties.Settings.Default.Save();
}
}
}
}
我希望如果我们选择A5，它会告诉打印驱动程序打印A5，
如果我们选择自定义的“用户定义”纸张尺寸，它将告诉打印机选择了哪种尺寸。而不是每次都将其固定在A4上
我们似乎无法在打印对话框之外设置纸张尺寸。
答案 0 :(得分：0)
我相信；在this和this MSDN文章之后；您将要按照以下方式做一些事情：
System.Drawing.Printing.PaperSize paperSize = new System.Drawing.Printing.PaperSize("custom", width, height);
PrintDocument printDoc = new PrintDocument();
printDoc.DefaultPageSettings.PaperSize = paperSize;
答案 1 :(得分：0)
我已经遍历了您的代码，
我认为前端（XAML）在特定用例上会引发一些事件，该事件是“ Properties.Settings.Default”中的实际值的替代。
如果您为此问题提供XAML代码，则最好解决。
我可以研究一下，并将为您提供更好的解决方案。
您可以在此处分享我的代码，这是我的skype：shsakariya