printing

问题 Currently taking a class that's using Scala which I've never used before, so the syntax and itself is new. I'm working on a simple division function but am running into some errors. First of all, am I using var sub=m right? In my code I simply wanted to do m = m-n but you can't change the variable, and I'm not sure what the best alternative is. Then my only other problem is the compiler barks at me for my print line.. <console>:14: error: reassignment to val m = m-n //////////////////////////

问题 I have a TM-T20 Epson, I'm using this code to try to print : "Hello Printer" Message, and i keep tracking of some proprieties of the PosPrinter : public void ImprintHelloPrinter() { //The Explorer PosExplorer explorer = new PosExplorer(); ////Get the device by its type LOGICAL NAME DeviceInfo device = explorer.GetDevice(DeviceType.PosPrinter, "T20PRINTER"); //Create an instance PosPrinter oposPrinter = (PosPrinter)explorer.CreateInstance(device); //Opening MessageBox.Show(@"Statue : " +

问题 I have a datagrid of information and when the print button is clicked I want to show a print preview screen of what it will look like and then let the user print the document. Heres what I got so far: PrintDocument myDocument = new PrintDocument(); PrintPreviewDialog PrintPreviewDialog1 = new PrintPreviewDialog(); PrintPreviewDialog1.Document = myDocument; PrintPreviewDialog1.ShowDialog(); My question is how to get the data onto the preview screen.. thanks! 回答1: You need to add the PrintPage

问题 This is an extension of my previous question. In that question, I needed to retrieve the text between parentheses where all the text was on a single line. Now I have this case: (aop) (abc d) This time, the open parenthesis can be on one line and the close parenthesis on another line, so: (abc d) also counts as text between the delimiters ' ( ) ' and I need to print it as abc d EDIT: In response to possible confusions of my question, let me clarify a little. Basically, I need to print text

问题 My application prints (to a printer) the information shown on screen (using the Canvas control) N times. The process is The user clicks a button (called Print). Update the Canvas with text (normally from a database but for the code below, it's hard coded) Print to printer Update the Canvas with new text (again from a database but for the code below, it's hard coded) Print to printer However, I can't get this to work as explained in the above process- the printer only prints the last update

问题 I have two files, A john 1 2 3 4 5 6 7 Ely 10 9 9 9 9 9 9 Maria 3 5 7 9 2 1 4 Rox 10 10 10 10 10 10 10 B john 7.5 Ely 4.5 Maria 3,7 Rox 8.5 What i want to do is create another file with only the persons who have in file A their average greater or equal with the 8.5 and in B their mark also greater or equal to 8.5, so in my example the C file would contain only Rox because only she fulfil the criteria. I have this #shell program echo "Fiserul are numele $1" filename=$1 filename2=$2 echo ""

问题 Currently I'm writing an app for OSX which will eventually need to be ported to iOS. The data that needs to be printed is being drawn via CoreGraphics into a PDF context - that is working perfectly. I've been reading the Apple dev documentation on printing in both iOS and OSX, and, ironically, it actually seems printing from iOS will be easier. On iOS, UIPrintInteractionController's printingItem property can take an NSData object containing PDF data and print that. Looks like it should be

问题 I am currently trying to print screen an active window using Visual C#. I have this code: SaveFileDialog saveImageDialog = new SaveFileDialog(); saveImageDialog.Title = "Select output file:"; saveImageDialog.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif"; //saveImageDialog.FileName = printFileName; if (saveImageDialog.ShowDialog() == DialogResult.OK) { // Set the bitmap object to the size of the screen bmpScreenshot = new Bitmap(this.Bounds.Width, this.Bounds.Height,

问题 I am using Generic text-only printer driver, provided as a sample in WDK(Windows driver toolkit). But it works with some applications and doesn't work with others. Like it works with Notepad and Microsoft word, but doesn't work with chrome browser or FloreantPOS. I tried using this driver to print to a file or a thermal printer with following 4 applications:- 1)Simple text on Notepad: Works successfully. 2)Text + graphics(word art) on Microsoft Word: Works successfully i.e. prints text and

问题 I'm trying to fix this piece of code where I'm printing from a hashmap having a list of plate numbers and owners (that format). I'm trying to print out just the owners via printOwners(); but I can't get it to not print duplicates. I've played around with it for a while, just can't seem to skip over duplicates. Here is my code: import java.util.ArrayList; import java.util.HashMap; public class VehicleRegister { private HashMap<RegistrationPlate, String> owners; public VehicleRegister() {