向窗体添加一个 DateTimePicker、两个文本框和两个按钮
添加以下代码:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
DateTimePicker1.Enabled = True
TextBox1.Enabled = True
TextBox2.Enabled = True
TextBox1.BackColor = DateTimePicker1.BackColor
TextBox2.BackColor = Color.FromArgb(DateTimePicker1.BackColor.A, DateTimePicker1.BackColor.R, DateTimePicker1.BackColor.G, DateTimePicker1.BackColor.B)
End Sub
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
DateTimePicker1.Enabled = False
TextBox1.Enabled = False
TextBox2.Enabled = False
TextBox1.BackColor = DateTimePicker1.BackColor
TextBox2.BackColor = Color.FromArgb(DateTimePicker1.BackColor.A, DateTimePicker1.BackColor.R, DateTimePicker1.BackColor.G, DateTimePicker1.BackColor.B)
End Sub
在所有情况下,从,和的BackColor
回读都具有相同的 ARGB 值DateTimePicker
TextBox1
TextBox2
但是当Button2
点击时,屏幕上TextBox1
的实际上是 F0F0F0 (来自屏幕抓取颜色选择器)- 有对此的解释吗?BackColor
我认为这也适用于 C# - 因此是标签。