回答編集履歴
2
AutoApplicationContext を改善
test
CHANGED
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@@ -118,17 +118,11 @@
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118
118
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119
119
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{
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120
120
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121
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-
public AutoApplicationContext(Form form) : base(form)
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121
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+
public AutoApplicationContext(Form form) : base(form) { }
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122
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-
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123
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-
{
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124
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-
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125
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-
form.FormClosed += Form_FormClosed;
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126
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-
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127
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-
}
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128
122
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129
123
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130
124
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131
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-
pr
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125
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+
protected override void OnMainFormClosed(object sender, EventArgs e)
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132
126
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133
127
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{
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134
128
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@@ -142,13 +136,13 @@
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142
136
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143
137
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this.MainForm = form;
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144
138
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145
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-
form.FormClosed += Form_FormClosed;
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146
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-
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147
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-
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139
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+
return;
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148
140
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149
141
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}
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150
142
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151
143
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}
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144
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+
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145
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base.OnMainFormClosed(sender, e);
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152
146
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153
147
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}
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154
148
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1
VB6 風にしてみた
test
CHANGED
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@@ -71,3 +71,119 @@
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71
71
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}
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72
72
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73
73
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```
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74
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+
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75
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#追記
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76
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77
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78
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79
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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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80
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81
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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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82
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83
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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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84
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85
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86
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87
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```C#
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88
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89
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using System;
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90
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91
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using System.Windows.Forms;
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92
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93
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94
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95
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static class Program
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96
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97
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{
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98
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99
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[STAThread]
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100
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101
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static void Main()
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102
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103
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{
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104
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105
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Application.EnableVisualStyles();
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106
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107
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Application.SetCompatibleTextRenderingDefault(false);
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108
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109
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Application.Run(new AutoApplicationContext(new Form1()));
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110
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111
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}
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112
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113
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}
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114
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115
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116
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117
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class AutoApplicationContext : ApplicationContext
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118
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119
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{
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120
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121
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public AutoApplicationContext(Form form) : base(form)
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122
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123
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{
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124
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125
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form.FormClosed += Form_FormClosed;
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126
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127
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}
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128
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129
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130
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131
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private void Form_FormClosed(object sender, FormClosedEventArgs e)
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132
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133
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{
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134
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135
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foreach (Form form in Application.OpenForms)
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136
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137
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{
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138
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139
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if (!form.InvokeRequired)
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140
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141
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{
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142
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+
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143
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this.MainForm = form;
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144
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145
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form.FormClosed += Form_FormClosed;
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146
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147
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break;
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148
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149
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}
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150
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+
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151
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}
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152
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+
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153
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}
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154
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+
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155
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}
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156
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+
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157
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+
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158
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+
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159
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public partial class Form1 : Form
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160
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161
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{
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162
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163
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public Form1()
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164
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165
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{
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166
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167
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InitializeComponent();
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168
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169
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}
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170
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+
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171
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+
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172
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+
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173
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private void button1_Click(object sender, EventArgs e)
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174
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+
|
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175
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+
{
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176
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+
|
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177
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+
var f = new Form1();
|
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178
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+
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179
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+
f.Show();
|
|
180
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+
|
|
181
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+
this.Close();
|
|
182
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+
|
|
183
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+
}
|
|
184
|
+
|
|
185
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+
}
|
|
186
|
+
|
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187
|
+
|
|
188
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+
|
|
189
|
+
```
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