I have a ListView to display Images Icons, and i need 2 different Context menu on that ListView that have to show when i Right Click inside the ListView.
ContextMenu1 have to show only when i Right Click on a Item
ContextMenu2 have to show when i DO NOT Right click on a Item, but in the blank space of the ListView.
This is the current Code that i have, but it is only working when i right click on a item:
private void ListView_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
if (ListView.GetItemAt(e.X, e.Y) is ListViewItem)
{
ContextMenu1.Show(Cursor.Position);
}
else
{
ContextMenu2.Show(Cursor.Position);
}
}
}
What i did wrong?
GetItemAt will always return a ListviewItem. You should check for null like this example from MSDN:
private void ListView_MouseDown(object sender, MouseEventArgs e)
{
if (ListView.GetItemAt(e.X, e.Y) != null )
{
ContextMenu1.Show(Cursor.Position);
}
else
{
ContextMenu2.Show(Cursor.Position);
}
}
Try using the MouseDown or MouseUp event instead:
listView1.MouseDown += listView1_MouseDown;
void listView1_MouseDown(object sender, MouseEventArgs e) {
if (e.Button == MouseButtons.Right) {
if (listView1.GetItemAt(e.X, e.Y) is ListViewItem) {
ContextMenu1.Show(Cursor.Position);
} else {
ContextMenu2.Show(Cursor.Position);
}
}
}
The MouseClick event fires only when a ListItem is clicked.
Related
I'm trying to get the tabpage that was clicked by right button of mouse,in another words the tabpage that opened the contextmenustrip.
There's a toolstripmenuitem called Close which I used to close the tab that was clicked on.
I used this code :
public partial class USBrowser : Form
{
private Point lastpoint;
}
private void closeTabToolStripMenuItem_Click(object sender, EventArgs e)
{
for (int i = 0; i < browserTabControl.TabCount; i++)
{
Rectangle rec = browserTabControl.GetTabRect(i);
if (rec.Contains(this.PointToClient(lastpoint)))
closeTab(i);//this function closes the tab at specific index
}
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
if (e.Button == MouseButtons.Right)
lastpoint = Cursor.Position;
}
I also added(when adding the tabpage) :
browserTabControl.TabPages.Insert(browserTabControl.TabCount - 1,WebPage);
browserTabControl.SelectTab(WebPage);
browserTabControl.SelectedTab.MouseClick += SelectedTab_MouseClick;
void SelectedTab_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
lastpoint = Cursor.Position;
}
The problem is that the lastpoint is always (0,0) !!
Why ?
Any other suggested idea is welcomed
thanx in advance
None of these event handlers will actually run. Not the form's OnMouseClick() method since you are not actually right-clicking the form. And not the tab page's MouseClick event handler since you gave the TabControl a context menu. So lastpoint being empty is the expected outcome.
It is not clear how you want this context menu to work. If you use it by right-clicking the tab page then it is simple, just destroy the selected page:
private void closeToolStripMenuItem_Click(object sender, EventArgs e) {
tabControl1.SelectedTab.Dispose();
}
If you activate it by right-clicking a tab, one that isn't selected, then it gets more complicated. You have to memorize which tab was clicked on, do so by using the context menu's Opening event:
private TabPage RightClickedTab;
private void contextMenuStrip1_Opening(object sender, CancelEventArgs e) {
RightClickedTab = tabControl1.SelectedTab;
var pos = tabControl1.PointToClient(Cursor.Position);
for (int tab = 0; tab < tabControl1.TabCount; ++tab) {
if (tabControl1.GetTabRect(tab).Contains(pos)) {
RightClickedTab = tabControl1.TabPages[tab];
break;
}
}
}
private void closeToolStripMenuItem_Click(object sender, EventArgs e) {
if (RightClickedTab != null) RightClickedTab.Dispose();
}
How to make node being selected by right mouse button down ?
I made it by right mouse button clicked like this:
private void myTreeView_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
this.myTreeView.SelectedNode = e.Node;
}
}
I want node being selected not by click, but just button down.
I'm guessing you are looking for something like this:
void myTreeView_MouseDown(object sender, MouseEventArgs e) {
if (e.Button == MouseButtons.Right) {
TreeNode tn = myTreeView.GetNodeAt(e.Location);
if (tn != null) {
myTreeView.SelectedNode = tn;
}
}
}
Subscribe to the MouseDown event of the TreeView and comment out the NodeMouseClick code.
I would like to extended DataGridView to add a second ContextMenu which to select what columns are visible in the gird. The new ContextMenu will be displayed on right click of a column's header.
I am having difficulty get the correct horizontal position to show the context menu. How can I correct this?
public partial class Form1 : Form
{
DataGridView dataGrid;
ContextMenuStrip contextMenuStrip;
public Form1()
{
InitializeComponent();
dataGrid = new DataGridView();
Controls.Add(dataGrid);
dataGrid.Dock = System.Windows.Forms.DockStyle.Fill;
dataGrid.ColumnHeaderMouseClick += new System.Windows.Forms.DataGridViewCellMouseEventHandler(ColumnHeaderMouseClick);
dataGrid.DataSource = new Dictionary<string, string>().ToList();
contextMenuStrip = new ContextMenuStrip();
contextMenuStrip.Items.Add("foo");
contextMenuStrip.Items.Add("bar");
}
private void ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
contextMenuStrip.Show(PointToScreen(e.Location));
}
}
}
Here is a very simple way to make context menu appear where you right-click it.
Handle the event ColumnHeaderMouseClick
private void grid_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
contextMenuHeader.Show(Cursor.Position);
}
contextMenuHeader is a ContextMenuStrip that can be defined in the Designer view or at runtime.
To get the coordinate of the mouse cursor you could do this.
ContextMenu.Show(this, myDataGridView.PointToClient(Cursor.Position));
Have you tried using the Show overload that accepts a control and a position?
For example:
contextMenuStrip.Show(dataGrid, e.Location);
Edit: Full example
public partial class Form1 : Form
{
DataGridView dataGrid;
ContextMenuStrip contextMenuStrip;
public Form1()
{
InitializeComponent();
dataGrid = new DataGridView();
Controls.Add(dataGrid);
dataGrid.Dock = System.Windows.Forms.DockStyle.Fill;
dataGrid.MouseDown += MouseDown;
dataGrid.DataSource = new Dictionary<string, string>().ToList();
contextMenuStrip = new ContextMenuStrip();
contextMenuStrip.Items.Add("foo");
contextMenuStrip.Items.Add("bar");
}
private void MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
if (dataGrid.HitTest(e.X, e.Y).Type == DataGridViewHitTestType.ColumnHeader)
{
contextMenuStrip.Show(dataGrid, e.Location);
}
}
}
}
e.Location does not show the popup menu at the correct coordinates, instead just use the MousePosition property as follows:
ContextMenuStrip.Show(MousePosition)
or, explicitely
ContextMenuStrip.Show(Control.MousePosition)
The position returned is relative to the cell. So we have to add that offset.
private void grdView_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
var pos = ((DataGridView)sender).GetCellDisplayRectangle(e.ColumnIndex,
e.RowIndex, false).Location;
pos.X += e.X;
pos.Y += e.Y;
contextMenuStrip.Show((DataGridView)sender,pos);
}
}
Finally this worked for me.
ContextMenu.Show(myDataGridView, myDataGridView.PointToClient(Cursor.Position));
Calling Show twice will get you the exact location of the cursor. This answer is for those whom are unable to get the result with all above answers.
private void MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
contextMenuStrip.Show(dataGrid, e.Location));
contextMenuStrip.Show(Cursor.Position);
}
}
Where I was going wrong was that DataGridViewCellMouseEventArgs returns the location/x,y of where the mouse clicked within the column header. Instead I need to use HitTest in the grid's MouseDown event for a hit on the column headers and then convert the position of the hit from the gird co-ordinates to the screen co-ordinates.
public partial class Form1 : Form
{
DataGridView dataGrid;
ContextMenuStrip contextMenuStrip;
public Form1()
{
InitializeComponent();
dataGrid = new DataGridView();
Controls.Add(dataGrid);
dataGrid.Dock = System.Windows.Forms.DockStyle.Fill;
//dataGrid.ColumnHeaderMouseClick += ColumnHeaderMouseClick;
dataGrid.MouseDown += MouseDown;
dataGrid.DataSource = new Dictionary<string, string>().ToList();
contextMenuStrip = new ContextMenuStrip();
contextMenuStrip.Items.Add("foo");
contextMenuStrip.Items.Add("bar");
}
private void ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
contextMenuStrip.Show(PointToScreen(e.Location));
}
}
private void MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
if (dataGrid.HitTest(e.X, e.Y).Type == DataGridViewHitTestType.ColumnHeader)
{
contextMenuStrip.Show(dataGrid.PointToScreen(e.Location));
}
}
}
}
You were nearly right. You just need to the apply the PointToScreen method to the calling control:
private void ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Right)
{
contextMenuStrip.Show(((DataGridView)sender).PointToScreen(e.Location));
}
}
I think this is the most elegant solution, because it uses only the ColumnHeaderMouseClick arguments and not Cursor.Position.
I have a contextmenustrip that contains some option, I have almost implemented everything, i just want to check which items i have selected in options_MouseClick
private void ConsoleRichTextBox_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
options.Show();
Point currentPoint;
currentPoint = new Point(e.X, e.Y);
options.Show(ConsoleRichTextBox, currentPoint);
}
}
private void options_MouseClick(object sender, MouseEventArgs e)
{
//if options selected = clear
ConsoleRichTextBox.Clear();
}
You should just handle the Click event of each of the menu items. There's no need to handle the MouseClick event of a contextmenustrip. Also you can add multiple handlers to the same method and differentiate with the sender parameter as this will refer to the exact menu item that was clicked.
ToolStripMenuItem tsmi = new ToolStripMenuItem();
tsmi.Click += tsmi_Click;
and:
public void tsmi_Click(object sender, EventArgs e)
{
if (sender == tsmi)
{
// Do stuff
}
}
Is there any easy (5 lines of code) way to do this?
The shortest code to delete the tab the middle mouse button was clicked on is by using LINQ.
Make sure the event is wired up
this.tabControl1.MouseClick += tabControl1_MouseClick;
And for the handler itself
private void tabControl1_MouseClick(object sender, MouseEventArgs e)
{
var tabControl = sender as TabControl;
var tabs = tabControl.TabPages;
if (e.Button == MouseButtons.Middle)
{
tabs.Remove(tabs.Cast<TabPage>()
.Where((t, i) => tabControl.GetTabRect(i).Contains(e.Location))
.First());
}
}
And if you are striving for least amount of lines, here it is in one line
tabControl1.MouseClick += delegate(object sender, MouseEventArgs e) { var tabControl = sender as TabControl; var tabs = tabControl.TabPages; if (e.Button == MouseButtons.Middle) { tabs.Remove(tabs.Cast<TabPage>().Where((t, i) => tabControl.GetTabRect(i).Contains(e.Location)).First()); } };
Solution without LINQ not so compact and beautiful, but also actual:
private void TabControlMainMouseDown(object sender, MouseEventArgs e)
{
var tabControl = sender as TabControl;
TabPage tabPageCurrent = null;
if (e.Button == MouseButtons.Middle)
{
for (var i = 0; i < tabControl.TabCount; i++)
{
if (!tabControl.GetTabRect(i).Contains(e.Location))
continue;
tabPageCurrent = tabControl.TabPages[i];
break;
}
if (tabPageCurrent != null)
tabControl.TabPages.Remove(tabPageCurrent);
}
}
Don't have enough points to post a comment to the provided solutions but they all suffer from the same flaw: The controls within the removed tab are not released.
Regards
You could do this:
private void tabControl1_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Middle)
{
// choose tabpage to delete like below
tabControl1.TabPages.Remove(tabControl1.TabPages[0]);
}
}
Basically you are just catching a mouse click on tab control and only deleting a page if the middle button was clicked.