如何禁用应用内Istab功能？按钮悬停恢复Istab失效求助

It sounds like the issue with your MouseHover event not restoring the IsTab property comes down to how that event works—MouseHover has a built-in delay (around 400ms) and only triggers once when the mouse stays over the control, which can make it feel unresponsive. A more reliable approach is to use the MouseEnter event instead, which fires immediately when the mouse enters the button's bounds.

Here's the adjusted code:

private void LogoImage_Click(object sender, EventArgs e)
{
    // Disable IsTab only if it's currently enabled
    if (btnEssentialRules.IsTab)
        btnEssentialRules.IsTab = false;
}

private void btnEssentialRules_MouseEnter(object sender, EventArgs e)
{
    // Restore IsTab only if it's currently disabled
    if (!btnEssentialRules.IsTab)
        btnEssentialRules.IsTab = true;
}

Key Notes: #

• Replace MouseHover with MouseEnter: This ensures the highlight comes back as soon as the mouse touches the button, without any delay.
• Verify Event Registration: Make sure the MouseEnter event is properly hooked up to your button. You can do this in the Visual Studio Designer:
  1. Select btnEssentialRules in the designer.
  2. Go to the Events tab (lightning bolt icon) in the Properties window.
  3. Find the MouseEnter event and select btnEssentialRules_MouseEnter from the dropdown.

Edge Case Handling (Optional): #

If you want to handle the scenario where the mouse is already over the button when you click the image (so the highlight restores immediately), you can add a check in the image click event:

private void LogoImage_Click(object sender, EventArgs e)
{
    btnEssentialRules.IsTab = false;
    
    // Check if mouse is currently over the button
    var buttonRect = btnEssentialRules.RectangleToScreen(btnEssentialRules.ClientRectangle);
    if (buttonRect.Contains(Cursor.Position))
    {
        btnEssentialRules.IsTab = true;
    }
}

This way, if the mouse is already on the button when you click the image, the highlight won't disappear at all (since we immediately restore IsTab). Adjust this based on your desired behavior.

内容的提问来源于stack exchange，提问作者Arwads