我感觉是挺难
开源项目SharpDevelop_2.2.1.2648_Source中进行重载protected override bool ProcessCmdKey(ref Message msg,Keys keyData)
来处理这个问题
protected override bool ProcessCmdKey(ref Message msg,Keys keyData)
{
int index;
if (base.ProcessCmdKey(ref msg, keyData)) {
return true;
}
bool isInRenameMode = renameTab != null || renameTabItem != null;
switch (keyData) {
case Keys.Home:
if (activeTab.Items.Count > 0 && !isInRenameMode) {
activeTab.ChoosedItem = activeTab.Items[0];
EnsureVisible(activeTab.ChoosedItem);
Refresh();
}
break;
case Keys.End:
if (activeTab.Items.Count > 0 && !isInRenameMode) {
activeTab.ChoosedItem = activeTab.Items[activeTab.Items.Count - 1];
EnsureVisible(activeTab.ChoosedItem);
Refresh();
}
break;
case Keys.PageUp:
if (activeTab.Items.Count > 0 && !isInRenameMode) {
index = Math.Max(0, activeTab.Items.IndexOf(activeTab.ChoosedItem) - scrollBar.LargeChange);
activeTab.ChoosedItem = activeTab.Items[index];
EnsureVisible(activeTab.ChoosedItem);
Refresh();
}
break;
case Keys.PageDown:
if (activeTab.Items.Count > 0 && !isInRenameMode) {
index = Math.Min(activeTab.Items.Count - 1, activeTab.Items.IndexOf(activeTab.ChoosedItem) + scrollBar.LargeChange);
activeTab.ChoosedItem = activeTab.Items[index];
EnsureVisible(activeTab.ChoosedItem);
Refresh();
}
break;
case Keys.Down:
if (activeTab.Items.Count > 0 && !isInRenameMode) {
if (activeTab.ChoosedItem != null) {
activeTab.ChoosedItem = activeTab.Items[Math.Min(activeTab.Items.Count - 1, activeTab.Items.IndexOf(activeTab.ChoosedItem) + 1)];
} else {
activeTab.ChoosedItem = activeTab.Items[0];
}
activeTab.SelectedItem = null;
EnsureVisible(activeTab.ChoosedItem);
Refresh();
}
return true;
case Keys.Up:
if (activeTab.Items.Count > 0 && !isInRenameMode) {
if (activeTab.ChoosedItem != null) {
activeTab.ChoosedItem = activeTab.Items[Math.Max(0, activeTab.Items.IndexOf(activeTab.ChoosedItem) - 1)];
} else {
activeTab.ChoosedItem = activeTab.Items[0];
}
activeTab.SelectedItem = null;
EnsureVisible(activeTab.ChoosedItem);
Refresh();
}
return true;
case Keys.Control | Keys.Up:
ActiveTab = Tabs[Math.Max(0, Tabs.IndexOf(ActiveTab) - 1)];
Refresh();
return true;
case Keys.Control | Keys.Down:
ActiveTab = Tabs[Math.Min(Tabs.Count - 1, Tabs.IndexOf(ActiveTab) + 1)];
Refresh();
return true;
case Keys.Return:
if (renameTab != null) {
renameTab.Name = renameTextBox.Text;
ExitRenameMode();
} else if (renameTabItem != null) {
renameTabItem.Name = renameTextBox.Text;
ExitRenameMode();
}
return true;
case Keys.Escape:
if (renameTab != null) {
if (doAddTab) {
Tabs.RemoveAt(Tabs.Count - 1);
renameTab = null;
renameTextBox.Visible = false;
doAddTab = false;
Refresh();
} else {
ExitRenameMode();
}
} else if (renameTabItem != null) {
ExitRenameMode();
}
return true;
}
return false;
}
