#3DLABPRINT P 51 PRINT TIME CODE#

Running this code will print something similar to this: $ python3 datetime-print-1.py

Obviously the date object holds the date, time holds the time, and datetime holds both date and time.Р”Р‡or example, the following code will print the current date and time: import datetime The datetime module consists of three different object types: date, time, and datetime.

Using this module, we can easily parse any date-time string and convert it to a datetime object. As you probably guessed, it comes with various functions for manipulating dates and times. Thankfully, Python comes with the built-in module datetime for dealing with dates and times. This is just one of many nuances that need to be handled when dealing with dates and time. A good date-time library should convert the time as per the timezone. Again, if the same API is used in different timezones, the conversion will be different. After getting a date-time string from an API, for example, we need to convert it to a human-readable format.

#3DLABPRINT P 51 PRINT TIME SOFTWARE#

While printing, a 'print dialogue' shows, in my case (of printing small POS receipts) this happens fast enough before it disappears, but it can still prevent application input till it disappears for bigger prints.One of the many common problems that we face in software development is handling dates and times.

The following points can be seen as problems in the approach and can be used for future development of the article:

The printer should already be defined (driver installed) to the system, especially when using the 'Print Preview' ( bIsDebug set to true), so that the preview window reflects the actual properties of the printer ( width, font, etc.).

Printer name is hard coded, but it can easily be set to read from a configuration file.

CutPaper() ' Can be used with real printer to cut the paper. P.CurrentX = (p.Width - sTextWidth) / 2 Case TextAlignment.RightР”В®nd Sub Public Sub WriteChars( ByVal Text As String)Р”Р‡or using the class, a sample receipt is being created, see code and resulted print.Р”В¬opy Code Dim P As New PrinterClass(Application.StartupPath)

Default ' do nothing Case TextAlignment.Left P.FontUnderline = False End Sub Public Sub EndDoc()Р”В®nd Sub Public Sub WriteLine( ByVal Text As String)Р”Вim sTextWidth As Single = p.TextWidth(Text)Р”В¬ase TextAlignment. P.FontUnderline = True End Sub Public Sub UnderlineOff() Next End Sub Public Sub GotoCol( Optional ByVal ColNumber As Integer = 0)Р”В®nd Sub Public Sub GotoSixth( Optional ByVal nSixth As Integer = 1)

Optional ByVal BoldType As Boolean = False)Р”Р‡or image printing, I used a PrintLogo sub, but you can use a general method (like PrintImage below):Р”В®nd Sub Public Property RTL() As Boolean Get Return p.RightToLeftР”В®nd Set End Property Public Sub FeedPaper( Optional ByVal nlines As Integer = 3) Optional ByVal FontName As String = ' FontA1x1', _ P.CurrentY += 20 ' to move under the drawn line End Sub Public Sub NormalFont()Р”В®nd Sub Public Sub SetFont( Optional ByVal FontSize As Single = 9.5F, _ Public Property Alignment() As TextAlignmentР”В®nd Get Set( ByVal value As TextAlignment)Р”В®nd Set End Property Public Sub AlignLeft()Р”В®nd Sub Public Property FontName() As String Get Return p.FontNameР”В®nd Set End Property Public Property FontSize() As Single Get Return p.FontSizeР”В®nd Set End Property Public Property Bold() As Boolean Get Return p.FontBoldР”В®nd Set End Property Public Sub DrawLine() Some imports will be needed throughout the code: Start by adding to the references of the project. To use the good old printer class of VB 6.0 in your VB.NET code, you will need to use the PowerPack compatibility library, which can be downloaded here. Printing images needed tons of code, and print-previewing was almost impossible since you might need to build an engine to parse those specific standard codes to display them on the screen.Р”Р„ much easier solution was to use the classic VB printer object, those unfamiliar with the printer object can read more about it here. POS printing using the EPS/POS standard has proved difficult, after spending days of designing the printing class I couldn't write Arabic text for unknown reasons. Developers can add images (Logos, Ads, etc.) can use any language with any direction (RTL, LTR) easily and can use print preview to save paper printed for testing. This is a class that helps developers in designing POS printing forms the easy way.

3dlabprint p-51 print time