回答編集履歴
1
dispose
answer
CHANGED
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@@ -2,7 +2,7 @@
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2
2
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Paintで貼りつけてみてはどうでしょうか
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3
3
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4
4
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```ここに言語を入力
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5
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-
private Bitmap _canvas;
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5
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+
private Bitmap _canvas = null;
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6
6
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7
7
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public Form1()
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8
8
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{
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@@ -17,6 +17,11 @@
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}
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}
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20
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+
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
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21
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{
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if (_canvas != null) _canvas.Dispose();
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23
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}
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+
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private void Form1_Paint(object sender, PaintEventArgs e)
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{
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using (Graphics g = Graphics.FromHwnd(this.Handle))
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