Question

A ToolStripComboBox is placed after a ToolStripButton and is folowed by another one, which is right-aligned. How do I best set up the ToolStripComboBox to always adjust its length to fill all the space available between the preceeding and the folowing ToolStripButtons?

In past I used to handle a parent resize event, calculate the new length to set based on neighboring elements coordinates and setting the new size. But now, as I am developing a new application, I wonder if there is no better way.

Answer 1

There’s no automatic layout option for this. But you can easily do it by implementing the ToolStrip.Resize event. This worked well:

    private void toolStrip1_Resize(object sender, EventArgs e) {
        toolStripComboBox1.Width = toolStripComboBox2.Bounds.Left - toolStripButton1.Bounds.Right - 4;
    }
    protected override void OnLoad(EventArgs e) {
        toolStrip1_Resize(this, e);
    }

Be sure to set the TSCB’s AutoResize property to False or it won’t work.