c# - 按钮 WinForms 的 70% 不透明度颜色

Question

我想在我将鼠标悬停在按钮上时仍然保持 30% 透明(这样您可以从表单中看到背景图像)但仍然看到一些颜色时产生这种效果..

我试过了，但这只是给我一片空白:

private void roundedButton2_MouseEnter(object sender, EventArgs e)
        {
            roundedButton2.UseVisualStyleBackColor = false;
            roundedButton2.FlatAppearance.MouseOverBackColor = Color.FromArgb(100, Color.Black);
        }

        private void roundedButton2_MouseLeave(object sender, EventArgs e)
        {
            roundedButton2.UseVisualStyleBackColor = true;
            roundedButton2.BackColor = Color.Transparent;
        }

在这里，我将鼠标移出并将鼠标放在按钮上，这样您就可以看到我拥有的东西。 编辑:解决了....现在上面的代码完全符合我的要求。

Answer 1

问题解决了。我将代码更改如下:

private void roundedButton2_MouseEnter(object sender, EventArgs e)
        {
            roundedButton2.UseVisualStyleBackColor = false;
            roundedButton2.FlatAppearance.MouseOverBackColor = Color.FromArgb(100, Color.Black);
        }

        private void roundedButton2_MouseLeave(object sender, EventArgs e)
        {
            roundedButton2.UseVisualStyleBackColor = true;
            roundedButton2.BackColor = Color.Transparent;
        }

必须在背景色之前添加 FlatAppearance。