C# MouseHover 上的按钮透明背景

Question

我有一个用代码创建的按钮，它有一个背景图像并且是透明的。到目前为止一切顺利，它有效，可怕的灰色背景颜色消失了。 除了当我将鼠标悬停在其上时，令人恼火的情况不断出现。

所以我尝试了我能想到的，那就是添加一个事件监听器，它将在鼠标悬停、输入和离开时将背景颜色更改为透明。但似乎没有任何作用。

有什么想法吗？

这是我到目前为止的代码:

    private void CreateFirstScreen() {
        mainForm.BackgroundImage = Image.FromFile(@"[img dir]");

        Button nextBtn = new Button();
        nextBtn.BackColor = Color.Transparent;        <== this works!
        nextBtn.BackgroundImage = Image.FromFile(@"[img dir]");
        nextBtn.FlatStyle = FlatStyle.Flat;

        nextBtn.FlatAppearance.BorderSize = 0;
        nextBtn.SetBounds(1555, 820, 274, 106);

        mainForm.Controls.Add(nextBtn);


        nextBtn.MouseHover += (sender, args) => {
            nextBtn.BackColor = Color.Transparent;    <= doesn't work
        };
        nextBtn.MouseEnter += (sender, args) => {
            nextBtn.BackColor = Color.Transparent;    <= doesn't work
        };
        nextBtn.MouseLeave += (sender, args) => {
            nextBtn.BackColor = Color.Transparent;    <= doesn't work
        };
        nextBtn.Click += (sender, args) => {
            CreateSecondScreen();                     <= does work
            mainForm.Controls.Remove(nextBtn);        <= does work
        };
    }

Answer 1

尝试添加以下内容:

nextBtn.FlatAppearance.MouseOverBackColor=Color.Transparent;