DFL Mini-Calc
Part of DflCategory
Description
Demonstrates very simple calculator with two buttons and three input fields. Equivalent to Win32 api MiniCalcExample example.
Example
// To compile: // dmd DflMiniCalc.d dfl.lib -L/exet:nt/su:windows:4.0 private import dfl.all; private import std.string; class MiniCalcForm: Form { this() { text = "DflMiniCalc"; CreateControls(); acceptButton = plusButton; } private void CreateControls() { size = Size(120, 150); // Overall form size plusButton = new Button; plusButton.parent = this; plusButton.text = "Plus"; plusButton.left = 10; plusButton.size = Size(50, 25); plusButton.click ~= &PlusClick; minusButton = new Button; minusButton.parent = this; minusButton.text = "Minus"; minusButton.left = 60; minusButton.size = Size(50, 25); minusButton.click ~= &MinusClick; firstNumberText = new TextBox; firstNumberText.parent = this; firstNumberText.text = "170"; firstNumberText.location = Point(10, 30); firstNumberText.size = Size(100, 20); secondNumberText = new TextBox; secondNumberText.parent = this; secondNumberText.text = "252"; secondNumberText.location = Point(10, 55); secondNumberText.size = Size(100, 20); resultNumberText = new TextBox; resultNumberText.parent = this; resultNumberText.text = ""; resultNumberText.location = Point(10, 80); resultNumberText.size = Size(100, 20); } private void PlusClick(Object sender, EventArgs ea) { GetNumbers(); result = num1 + num2; resultNumberText.text = std.string.toString(result); } private void MinusClick(Object sender, EventArgs ea) { GetNumbers(); result = num1 - num2; resultNumberText.text = std.string.toString(result); } private void GetNumbers() { char[] firstValue = firstNumberText.text; char[] secondValue = secondNumberText.text; num1 = atoi(firstValue); num2 = atoi(secondValue); } private TextBox firstNumberText; private TextBox secondNumberText; private TextBox resultNumberText; private Button plusButton; private Button minusButton; private long num1; private long num2; private long result; } int main() { Application.run(new MiniCalcForm); return 0; }
Source
Link | http://www.dsource.org/tutorials/index.php?show_example=135 |
Posted by | Lynn |
Date/Time | Wed Dec 22, 2004 8:41 am |