How to stop a double click of the window title bar from maximizing a window of FormBorderStyle.FixedToolWindow?

How to stop a double click of the window title bar from maximizing a window of FormBorderStyle.FixedToolWindow?

To prevent a double-click on the window title bar from maximizing a FormBorderStyle.FixedToolWindow window in C#, you can override the WndProc method of the form and handle the WM_NCLBUTTONDBLCLK message. Here's an example:

using System; using System.Windows.Forms; public class CustomForm : Form { private const int WM_NCLBUTTONDBLCLK = 0x00A3; // WM_NCLBUTTONDBLCLK message protected override void WndProc(ref Message m) { if (m.Msg == WM_NCLBUTTONDBLCLK && FormBorderStyle == FormBorderStyle.FixedToolWindow) { // Ignore double-clicks on the title bar return; } base.WndProc(ref m); } }

In the example above, we create a custom form class CustomForm that derives from Form. We define the constant value WM_NCLBUTTONDBLCLK as the message code for the non-client area double-click message.

We override the WndProc method, which processes Windows messages for the form. Inside the method, we check if the received message is WM_NCLBUTTONDBLCLK and the form's FormBorderStyle is FixedToolWindow. If both conditions are met, we simply return without further processing, effectively ignoring the double-click on the title bar.

By using this approach, you can prevent a double-click on the window title bar from maximizing a window with the FormBorderStyle.FixedToolWindow style.

Examples

  1. "Prevent double-click on title bar from maximizing FixedToolWindow"

    • Description: Learn how to stop a double-click on the window title bar from maximizing a Form with FormBorderStyle.FixedToolWindow in C#.

    • Code:

      // In your form's constructor this.SetMaximizeBox(false);

  2. "Disable Maximize on double click in FixedToolWindow"

    • Description: Explore ways to disable the default behavior of maximizing a FixedToolWindow when double-clicking on the title bar.

    • Code:

      // Override WndProc to intercept and suppress WM_NCLBUTTONDBLCLK message protected override void WndProc(ref Message m) { const int WM_NCLBUTTONDBLCLK = 0xA3; if (m.Msg == WM_NCLBUTTONDBLCLK) { // Suppress the double-click action return; } base.WndProc(ref m); }

  3. "Prevent FormBorderStyle.FixedToolWindow from maximizing"

    • Description: Understand how to modify the behavior of a Form with FormBorderStyle.FixedToolWindow to prevent it from maximizing on a double-click.

    • Code:

      // Set the MaximumSize property to the form's initial size this.MaximumSize = this.Size;

  4. "Override double click event on title bar FixedToolWindow"

    • Description: Learn how to override the double-click event on the title bar of a Form with FormBorderStyle.FixedToolWindow to customize the behavior.

    • Code:

      // Override OnMouseDoubleClick event protected override void OnMouseDoubleClick(MouseEventArgs e) { // Prevent base class processing to avoid maximizing // your custom handling here // Uncomment the line below if you want to suppress the base class processing // base.OnMouseDoubleClick(e); }

  5. "Customize FormBorderStyle.FixedToolWindow double click"

    • Description: Find resources on customizing the double-click behavior on the title bar of a FixedToolWindow in C#.

    • Code:

      // Subscribe to the DoubleClick event and customize the behavior this.DoubleClick += (sender, e) => { // Your custom handling here };

  6. "Handling WM_NCLBUTTONDBLCLK in FixedToolWindow"

    • Description: Understand how to handle the WM_NCLBUTTONDBLCLK message to control the double-click behavior in a FixedToolWindow.

    • Code:

      // Override WndProc to handle WM_NCLBUTTONDBLCLK protected override void WndProc(ref Message m) { const int WM_NCLBUTTONDBLCLK = 0xA3; if (m.Msg == WM_NCLBUTTONDBLCLK) { // Custom handling for double-click return; } base.WndProc(ref m); }

  7. "Cancel Maximize on double click FixedToolWindow"

    • Description: Explore ways to cancel or prevent the default maximize action on a double-click for a Form with FormBorderStyle.FixedToolWindow.

    • Code:

      // Handle the Resize event to reset the form size on maximize this.Resize += (sender, e) => { if (this.WindowState == FormWindowState.Maximized) { this.WindowState = FormWindowState.Normal; } };

  8. "FormBorderStyle.FixedToolWindow double-click event"

    • Description: Learn how to handle the double-click event specifically for a Form with FormBorderStyle.FixedToolWindow.

    • Code:

      // Subscribe to the MouseDoubleClick event and customize the behavior this.MouseDoubleClick += (sender, e) => { // Your custom handling here };

  9. "Modify title bar behavior in FixedToolWindow C#"

    • Description: Find information on modifying the title bar behavior of a Form with FormBorderStyle.FixedToolWindow to prevent undesired actions.

    • Code:

      // Override the OnDoubleClick event to customize the behavior protected override void OnDoubleClick(EventArgs e) { // Your custom handling here // Uncomment the line below if you want to suppress the base class processing // base.OnDoubleClick(e); }

  10. "Prevent Maximize on title bar double click FixedToolWindow"

    • Description: Discover ways to prevent the maximize action when double-clicking the title bar of a Form with FormBorderStyle.FixedToolWindow.

    • Code:

      // Override the OnDoubleClick event to customize the behavior protected override void OnDoubleClick(EventArgs e) { if (this.WindowState == FormWindowState.Normal) { // Your custom handling here } }

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