e632. setting a row or column of a gridbadlayout to a particular size.txt

这里面包含了一百多个JAVA源文件

By default, the width of a column in a gridbag layout is set to the widest component in the component. This example demonstrates how to increase the width of the column to a particular size. The same applies to rows of a gridbag layout. 
See e622 Creating a GridBagLayout for an example on how to use a gridbag layout. 

    // Sets the minimum width for column c to be w pixels wide
    public void setColumnMinWidth(GridBagLayout gbl, int c, int w) {
        int[] ws = gbl.columnWidths;
        if (ws == null) {
            ws = new int[c+1];
        } else if (ws.length < c+1) {
            ws = new int[c+1];
            System.arraycopy(gbl.columnWidths, 0, ws, 0, gbl.columnWidths.length);
        }
        ws[c] = w;
        gbl.columnWidths = ws;
    }
    
    // Sets the minimum height for row r to be h pixels high
    public void setRowMinHeight(GridBagLayout gbl, int r, int h) {
        int[] hs = gbl.rowHeights;
        if (hs == null) {
            hs = new int[r+1];
        } else if (hs.length < r+1) {
            hs = new int[r+1];
            System.arraycopy(gbl.rowHeights, 0, hs, 0, gbl.rowHeights.length);
        }
        hs[r] = h;
        gbl.rowHeights = hs;
    }