I am adding dyanmic controls(textboxes) in flowlayout panel.I want the controls to scroll when I click on a button(up or down button).The scroll buttons should not be visible.How can I achieve this.Any suggestions?? It is windows application using c#.net
try following code
int yLoc = 0;
private void Button1_Click(object sender, EventArgs e)
{
if (flowPanel.Location.Y <= yLoc && flowPanel.Location.Y >= flowPanel.VerticalScroll.Minimum)
{
yLoc -= 50;
flowPanel.Location = new Point(0, yLoc);
}
}
private void Button2_Click(object sender, EventArgs e)
{
if (flowPanel.Location.Y <= yLoc && flowPanel.Location.Y < flowPanel.VerticalScroll.Maximum)
{
yLoc += 50;
flowPanel.Location = new Point(0, yLoc);
}
}
Related
Example:
I have a Panel or flowLayoutpanel so I want to scroll look into items without using scrollbar, instead I want to use MouseWheel
So I was wondering is there any way that you can scroll up or down in a panel or flowLayoutPanel
Without use 'Auto Scroll= true' instead I want to moveViewPanel up or down when mouse scrolled.
If you get what I mean
These are some code that I used with but seemed not to work at all
--Sameple1
void Panel2_mWheel(object sender, MouseEventArgs e)
{
//Get cursor position
Point mousePoint = new Point(e.X, e.Y);
//Change to the location of the form of this form
mousePoint.Offset(this.Location.X, this.Location.Y);
if (panel2.RectangleToScreen(panel2.DisplayRectangle).Contains(mousePoint))
{
Console.WriteLine("Contain");
panel2.AutoScrollPosition = new Point(0, panel2.VerticalScroll.Value - e.Delta);
}
}
--Sample2
Panel.MouseEnter += C_MouseEnter;
void Panel_MouseEnter(object sender, EventArgs e)
{
c.Focus();
}
--sample3
panel.MouseWheel += pn_MouseWheel;
private void pn_MouseWheel(object sender, MouseEventArgs e)
{
int deltaScroll = 10;
if (e.Delta > 0)
{
if (pnlContain.VerticalScroll.Value - deltaScroll >= pnlContain.VerticalScroll.Minimum)
pnlContain.VerticalScroll.Value -= deltaScroll;
else
pnlContain.VerticalScroll.Value = pnlContain.VerticalScroll.Minimum;
}
else
{
if (pnlContain.VerticalScroll.Value + deltaScroll <= pnlContain.VerticalScroll.Maximum)
pnlContain.VerticalScroll.Value += deltaScroll;
else
pnlContain.VerticalScroll.Value = pnlContain.VerticalScroll.Maximum;
}
--sample 4
panel_wheel(object sender, MouseEventArgs e)
{
if(e.OldValue>e.NewValue)
{
//Scroll up Do stuff
}
else
{
//Scroll down Do stuff
}
}
Anyone help me please!!
I am new in c# and trying to develop Scary Screamer Application. It is an joke windows forms application which is running on the PC and invisible in taskbar.
There is timer running in this application. If system datetime.now.minute = 15
It should play scary sound and show scary picture on the screen. After 1-2 seconds picture should disappear from the screen.
But i am stuck and don't know how to make picture disappear. Any Ideas how to do that?
Below is my code:
namespace screamer2
{
public partial class Form1 : Form
{
SoundPlayer pla = new SoundPlayer(Properties.Resources._3);
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this.TransparencyKey = this.BackColor;
this.Left = 0;
this.Top = 0;
this.Width = Screen.PrimaryScreen.Bounds.Width/2;
this.Height = Screen.PrimaryScreen.Bounds.Height/2;
this.TopMost = true;
}
private void timer1_Tick(object sender, EventArgs e)
{
if (DateTime.Now.Minute == 15)
{
BackgroundImage = Properties.Resources._1;
System.Threading.Thread.Sleep(500);
pla.Play();
}
}
}
}
I would propose to set image once in Form1_Load and then control any showing and hiding of window using Form.Opacity variable. I have tested the code below and should work as you wanted.
SoundPlayer pla = new SoundPlayer(Properties.Resources._3);
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this.TransparencyKey = this.BackColor;
this.Left = 0;
this.Top = 0;
this.Opacity = 0; //This line added
this.Width = Screen.PrimaryScreen.Bounds.Width / 2;
this.Height = Screen.PrimaryScreen.Bounds.Height / 2;
this.BackgroundImage = Properties.Resources._1; //We set the image once here
this.TopMost = true;
}
private void timer1_Tick(object sender, EventArgs e)
{
if (DateTime.Now.Minute == 15)
{
this.Opacity = 1; //We show the window
System.Threading.Thread.Sleep(500);
pla.Play();
this.Opacity = 0; //We hide the window
}
}
I am developing an exe file
Which creates dynamic textboxes(no. of textboxes depends upon the user input in the one already provided textbox),
In the beginning it focus on the 1st textbox,
It should move focus to next textbox on click of "ENTER" key.
What I'm trying is:
private void Form1_Load(object sender, EventArgs e)
{
int a = 10;
for (int i = 1; i < 5; i++)
{
TextBox txtbx;
txtbx = new TextBox();
txtbx.Location = new Point(10, a);
a += 30;
this.Controls.Add(txtbx);
if(i==1)
{
txtbx.Focus();
}
}
}
public void Form1_KeyPessed(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.ENTER)
{
SendKeys.Send("{TAB}");
}
}
Need to use Control.TabIndex Property and you need to bind key down event for each newly created Text box
Try this :
private void Form1_Load(object sender, EventArgs e)
{
int a = 10;
for (int i = 1; i < 5; i++)
{
TextBox txtbx;
txtbx = new TextBox();
txtbx.Location = new Point(10, a);
txtbx.KeyDown += Txtbx_KeyDown; //Added
txtbx.TabIndex = i; //Added
a += 30;
this.Controls.Add(txtbx);
if (i == 1)
{
txtbx.Focus();
}
}
}
Now add Key down handler
//Added
private void Txtbx_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode.Equals(Keys.Enter))
{
SendKeys.Send("{TAB}");
}
}
I am pretty new to C# and struggle a lot with a small project I want to do.
I am busy with something like a collage maker where I have a list of pictures on the left hand side and I want to drag and drop multiple images to the right hand side where I want to be able to move them around to create my collage.
I wanted to show an image but I am not allowed to post images with less than 10 reputation points. But look here for the image:
I can't manage to get it to work. I've looked online for help but I can't really find what I'm looking for. The stuff I do find are too unclear and I struggle to understand.
This is what I have so far for the code to drag and drop from the left to the right but it doesn't work;
private void pictureBox1_DragEnter(object sender, DragEventArgs e)
{
int len = e.Data.GetFormats().Length - 1;
int i;
for (i = 0; i <= len; i++)
{
if (e.Data.GetFormats()[i].Equals("System.Windows.Forms.ListView+SelectedListViewItemCollection"))
{
//The data from the drag source is moved to the target.
e.Effect = DragDropEffects.Move;
}
}
}
private void pictureBox1_DragDrop(object sender, DragEventArgs e)
{
//Return if the items are not selected in the ListView control.
if (listView1.SelectedItems.Count == 0)
{
return;
}
ListViewItem dragitem = listView1.SelectedItems[0];
pictureBox2.Image = imageList1.Images[dragitem.ImageIndex];
listView1.Items.Remove(dragitem);
}
private void listView1_MouseDown(object sender, MouseEventArgs e)
{
listView1.DoDragDrop(listView1.SelectedItems, DragDropEffects.Move);
}
And after I can add image to the left, how can I drag and move them around using the mouse coordinates?
Any help will be appreciated please.
Everything is done using C# in Windows Forms.
Here is a full example you may want to play with:
It uses a form with a ListView, an ImageList and a Panel to hold the PictureBoxes.
You could use a FlowLayoutPanel but this won't let you move the Pictureboxes later.
You also could use a grid of Panels and their BackgroundImage.
First we set up the form:
private void Form1_Load(object sender, EventArgs e)
{
KeyPreview = true;
FillLV(10);
AddPBs(36);
listView1.MouseMove += listView1_MouseMove;
}
void FillLV(int count)
{
for (int i = 0; i < count; i++) listView1.Items.Add("Item" + i, i);
}
void AddPBs(int count)
{
int iWidth = imageList1.ImageSize.Width;
int iHeight = imageList1.ImageSize.Height;
int cols = panel1.ClientSize.Width / iWidth;
for (int i = 0; i < count; i++)
{
PictureBox PB = new PictureBox();
PB.BackColor = Color.LightGray;
PB.Margin = new System.Windows.Forms.Padding(0);
PB.ClientSize = new System.Drawing.Size(iWidth , iHeight );
PB.Location = new Point(iWidth * (i % cols), iHeight * (i / cols));
PB.Parent = panel1;
PB.DragEnter += PB_DragEnter;
PB.DragDrop += PB_DragDrop;
PB.AllowDrop = true;
PB.MouseClick += (ss, ee) => { currentPB = PB; PB.Focus(); };
}
}
Note how we add events to the dynamically created PictureBoxes and how we set their hidden AllowDrop property.
Also note the little lambda to make the MouseClick prepare for moving them around with the keyboard.
For this we will also need a reference to the current box:
PictureBox currentPB = null;
Now we start the dragging. This should not be done in the MouseDown or else it will interfere with normal selection and also happen before the new selection is made..
Either you do it in the MouseMove:
void listView1_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
if (listView1.SelectedItems.Count > 0)
{
listView1.DoDragDrop(listView1.SelectedItems[0], DragDropEffects.Move);
}
}
}
Or (Update) for ListViews better and much simpler (thanks Hans!) in their ItemDrag event:
private void listView1_ItemDrag(object sender, ItemDragEventArgs e)
{
listView1.DoDragDrop(e.Item, DragDropEffects.Move);
}
Update: Both ways now use the dragged Item, not just its imageIndex, to make it simpler to remove the Item from the LV..
void PB_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(ListViewItem)))
e.Effect = DragDropEffects.Move;
else
e.Effect = DragDropEffects.None;
}
void PB_DragDrop(object sender, DragEventArgs e)
{
PictureBox pb = sender as PictureBox;
var item = (ListViewItem)e.Data.GetData(typeof(ListViewItem));
int index = item.ImageIndex;
pb.Image = imageList1.Images[index]; // make sure you have images for indices!!
}
Finally we use the keyboard to move the current box around. I have added code to bring it up and down in the z-order as well.
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
if (currentPB == null) return;
if (e.KeyData == Keys.Left) currentPB.Left -= 1;
else if (e.KeyData == Keys.Right) currentPB.Left += 1;
else if (e.KeyData == Keys.Up) currentPB.Top -= 1;
else if (e.KeyData == Keys.Down) currentPB.Top += 1;
else
{
int z = panel1.Controls.GetChildIndex(currentPB);
if (e.KeyData == Keys.Home) panel1.Controls.SetChildIndex(currentPB, 0);
else if (e.KeyData == Keys.End)
panel1.Controls.SetChildIndex(currentPB, panel1.Controls.Count);
else if (e.KeyData == Keys.PageUp)
panel1.Controls.SetChildIndex(currentPB, z + 1);
else if (e.KeyData == Keys.PageDown)
{ if (z > 0) panel1.Controls.SetChildIndex(currentPB, z - 1); }
}
panel1.Invalidate();
}
For this to work the form must have : KeyPreview = true;
Note that the sizes in an ImageList are restricted to 256x256. So you may want to use only the index and use it to load larger images from disk..
I have a Windows Forms project with a TabControl.
Does anyone know how to change the SelectedTab when you hover over it with the pointer?
You can use TabControl's MouseMove event to detect whether your mouse is present on any tab and then can select it:
private void tabControl1_MouseMove(object sender, MouseEventArgs e)
{
Rectangle mouseRect = new Rectangle(e.X, e.Y, 1, 1);
for (int i = 0; i < tabControl1.TabCount; i++)
{
if (tabControl1.GetTabRect(i).IntersectsWith(mouseRect))
{
tabControl1.SelectedIndex = i;
break;
}
}
}
Try this:
private void tabControl1_MouseMove(object sender, MouseEventArgs e)
{
for (int i = 0; i < tabControl1.TabCount; i++)
{
if (tabControl1.GetTabRect(i).Contains(e.X, e.Y))
{
tabControl1.SelectedIndex = i;
break;
}
}
}