Changes from Version 1 of DflMiniCalc

Author:

jcc7 (IP: 68.97.93.38)

Timestamp:

11/12/05 04:31:47 (18 years ago)

Comment:

--

DflMiniCalc

@@ +1 @@
+= 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 ==
+
+{{{
+#!d
+// 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 ||