回答編集履歴
2
AutoApplicationContext を改善
answer
CHANGED
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@@ -58,22 +58,19 @@
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58
58
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59
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class AutoApplicationContext : ApplicationContext
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60
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{
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61
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-
public AutoApplicationContext(Form form) : base(form)
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61
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+
public AutoApplicationContext(Form form) : base(form) { }
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62
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-
{
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63
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-
form.FormClosed += Form_FormClosed;
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64
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-
}
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65
62
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66
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-
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63
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+
protected override void OnMainFormClosed(object sender, EventArgs e)
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67
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{
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foreach (Form form in Application.OpenForms)
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69
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{
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70
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if (!form.InvokeRequired)
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71
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{
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this.MainForm = form;
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73
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-
form.FormClosed += Form_FormClosed;
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74
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-
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70
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+
return;
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75
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}
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}
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73
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+
base.OnMainFormClosed(sender, e);
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77
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}
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}
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79
76
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1
VB6 風にしてみた
answer
CHANGED
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@@ -34,4 +34,62 @@
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34
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this.Close();
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35
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}
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}
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37
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+
```
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38
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#追記
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39
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40
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VB6 風に、フォームが残っていたらメインフォームを自動で切り替えるようにしてみました。
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41
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(VB.NET の「Windowsアプリケーションフレームワークプロパティ」の
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42
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「シャットダウンモード」を「最後のフォームが閉じるとき」にしたときの動き)
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43
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+
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44
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+
```C#
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45
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using System;
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46
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using System.Windows.Forms;
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47
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+
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static class Program
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49
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{
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[STAThread]
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51
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static void Main()
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52
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{
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53
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Application.EnableVisualStyles();
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54
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Application.SetCompatibleTextRenderingDefault(false);
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55
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Application.Run(new AutoApplicationContext(new Form1()));
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56
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}
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57
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}
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58
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+
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59
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class AutoApplicationContext : ApplicationContext
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60
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{
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61
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public AutoApplicationContext(Form form) : base(form)
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62
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{
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63
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form.FormClosed += Form_FormClosed;
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64
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}
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65
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66
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private void Form_FormClosed(object sender, FormClosedEventArgs e)
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67
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{
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68
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foreach (Form form in Application.OpenForms)
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69
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{
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70
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if (!form.InvokeRequired)
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71
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{
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72
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this.MainForm = form;
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73
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form.FormClosed += Form_FormClosed;
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74
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break;
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75
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}
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76
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}
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77
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}
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78
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}
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79
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+
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80
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public partial class Form1 : Form
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81
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{
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82
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public Form1()
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83
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{
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InitializeComponent();
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85
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}
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86
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+
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87
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private void button1_Click(object sender, EventArgs e)
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88
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{
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89
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var f = new Form1();
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90
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f.Show();
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91
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this.Close();
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92
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}
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93
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}
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94
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+
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37
95
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```
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