IronDrawing提供一個選項給想要將RectangleF中的測量單位從像素(px)變為毫米(mm)或相反的使用者。 RectangleF使用的預設測量單位是像素(px)。
一旦新的Rectangle上調用轉換方法。 例如，使用ConvertTo(MeasurementUnits.Millimeters, 20)。 這將根據使用者設定的DPI把Rectangle的測量值轉換為毫米。 同樣的方法也可以應用於RectangleF類別。
using IronSoftware.Drawing;
using System;
// Instantiate a Rectangle (Default measurement unit is pixels)
Rectangle pxCropRect = new Rectangle(15, 25, 150, 175); // (X, Y, Width, Height)
// Convert and print a Rectangle measurement in millimeters
Rectangle mmCropRect = pxCropRect.ConvertTo(MeasurementUnits.Millimeters, 20);
Console.WriteLine(mmCropRect.X);
// Instantiate a RectangleF in millimeters
IronSoftware.Drawing.RectangleF pxCropRectFloat = new IronSoftware.Drawing.RectangleF(10F, 25F, 100F, 175F, MeasurementUnits.Millimeters); // (X, Y, Width, Height, Units)
// Convert and print a RectangleF measurement in pixels
IronSoftware.Drawing.RectangleF mmCropRectFloat = pxCropRectFloat.ConvertTo(MeasurementUnits.Pixels, 30);
Console.WriteLine(mmCropRectFloat.Y);
Imports IronSoftware.Drawing
Imports System
' Instantiate a Rectangle (Default measurement unit is pixels)
Dim pxCropRect As Rectangle = New Rectangle(15, 25, 150, 175) ' (X, Y, Width, Height)
' Convert and print a Rectangle measurement in millimeters
Dim mmCropRect As Rectangle = pxCropRect.ConvertTo(MeasurementUnits.Millimeters, 20)
Console.WriteLine(mmCropRect.X)
' Instantiate a RectangleF in millimeters
Dim pxCropRectFloat As IronSoftware.Drawing.RectangleF = New IronSoftware.Drawing.RectangleF(10.0F, 25.0F, 100.0F, 175.0F, MeasurementUnits.Millimeters) ' (X, Y, Width, Height, Units)
' Convert and print a RectangleF measurement in pixels
Dim mmCropRectFloat As IronSoftware.Drawing.RectangleF = pxCropRectFloat.ConvertTo(MeasurementUnits.Pixels, 30)
Console.WriteLine(mmCropRectFloat.Y)
