protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
switch (keyData)
{
case Keys.Down:
Control.ControlCollection buttons = this.flowLayoutPanel1.Controls;
int index = buttons.GetChildIndex(GetFocussedButton());
int newIndex = index + NUMBER_OF_COLUMNS;
if (newIndex > buttons.Count - 1)
{
newIndex = newIndex % NUMBER_OF_COLUMNS;
}
buttons[newIndex].Focus();
return(true);
case Keys.Up:
buttons = this.flowLayoutPanel1.Controls;
index = buttons.GetChildIndex(GetFocussedButton());
newIndex = index - NUMBER_OF_COLUMNS;
if (newIndex < 0)
{
if (index < buttons.Count % NUMBER_OF_COLUMNS)
{
newIndex = (int)(Math.Round((double)buttons.Count / NUMBER_OF_COLUMNS, 0) * 10) + index;
}
else
{
newIndex = (int)((Math.Round((double)buttons.Count / NUMBER_OF_COLUMNS, 0) - 1) * 10) + index;
}
}
buttons[newIndex].Focus();
return(true);
}
return(base.ProcessCmdKey(ref msg, keyData));
}
public static void ZOrderSync(UIElement entity)
{
IFormElementEntityDev entityDev = entity as IFormElementEntityDev;
Debug.Assert(entityDev != null, "实体对象没有实现 IFormElementEntityDev");
Control control = entityDev.Component as Control;
Debug.Assert(control != null, "entityDev.Component 不是 Control");
if (control.Parent == null)
{
return;
}
Control.ControlCollection controls = control.Parent.Controls;
IShellControlDev controlDev;
foreach (Control c in controls)
{
controlDev = c as IShellControlDev;
Debug.Assert(controlDev != null, "Control 没有实现 IShellControlDev");
if (controlDev == null)
{
continue;
}
((UIElement)controlDev.Entity).ZOrder = controls.GetChildIndex(c);
}
}
protected void btnShowControls_Clicked(object sender, EventArgs e)
{
Control.ControlCollection coll = this.Controls;
foreach (Control c in coll)
{
if (c != null)
{
Console.WriteLine(c.Text, "Index numb: " + coll.GetChildIndex(c, false));
}
}
}