scale form in C#

[sentra50]

hello,


I am trying to do the following:
On load, a form must scale itself with a number of pixels on the X axis, lets say 100 pixels for example. Also it must do this on a timer, to ensure a somehow smooth animation.

How would I do this?> Here is what I wrote so far but it does not work.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
 
namespace drawingStuff
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.DoubleBuffered = true;
            tmRefresh.Interval = 1;
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            tmRefresh.Start();
        }
 
        private void tmRefresh_Tick(object sender, EventArgs e)
        {
        this.Invalidate();
        }
 
 
        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            Graphics g;
            g = e.Graphics;
            g.SmoothingMode = SmoothingMode.HighQuality;
            g.ScaleTransform(this.Width - 50, this.Height - 50);
 
            Rectangle recForm = new Rectangle(0, 0, this.Width, this.Height);
            Pen pen = new Pen(Color.Black);
            g.DrawRectangle(pen, recForm);
        }
 
    }
}
 

Ok so what this does , it draws a rectangle inside my form. That one is scaled. I dont need rectangles inside my form, I want to scale the form itself and I don't know how to do this.

Please help with suggestions.

Regards,

[balabaster]

hello,


I am trying to do the following:
On load, a form must scale itself with a number of pixels on the X axis, lets say 100 pixels for example. Also it must do this on a timer, to ensure a somehow smooth animation.

How would I do this?> Here is what I wrote so far but it does not work.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
 
namespace drawingStuff
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
this.DoubleBuffered = true;
tmRefresh.Interval = 1;
}
private void Form1_Load(object sender, EventArgs e)
{
tmRefresh.Start();
}
 
private void tmRefresh_Tick(object sender, EventArgs e)
{
this.Invalidate();
}
 
 
private void Form1_Paint(object sender, PaintEventArgs e)
{
Graphics g;
g = e.Graphics;
g.SmoothingMode = SmoothingMode.HighQuality;
g.ScaleTransform(this.Width - 50, this.Height - 50);
 
Rectangle recForm = new Rectangle(0, 0, this.Width, this.Height);
Pen pen = new Pen(Color.Black);
g.DrawRectangle(pen, recForm);
}
 
}
}
 

Ok so what this does , it draws a rectangle inside my form. That one is scaled. I dont need rectangles inside my form, I want to scale the form itself and I don't know how to do this.

Please help with suggestions.

Regards,

If you want to modify items such as the form's size by timer you'll have to do it through the threading model using delegates.
VB

 
Dim FinalSize As New System.Drawing.Size(400, 400)
Private WithEvents ChangeSizeTimer As New Timers.Timer(25)    
Public Delegate Sub ChangeSizeDelegate(ByVal Size As System.Drawing.Size)
    Public Sub ChangeSize(ByVal Size As System.Drawing.Size)
        If Me.InvokeRequired Then
            Me.Invoke(New ChangeSizeDelegate(AddressOf ChangeSize), Size)
        Else
            Me.Size = Size
        End If
    End Sub
    Public Sub TimerEvt(ByVal Sender As Object, ByVal e As Timers.ElapsedEventArgs) _
    Handles ChangeSizeTimer.Elapsed
        Dim oSize As System.Drawing.Size
        'Do whatever it is you have to do to calculate your next size
        ChangeSize(oSize)
    End Sub 
    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Me.Size = New System.Drawing.Size(200, 200)
        ChangeSizeTimer.Start()
    End Sub
 

C#

 
System.Drawing.Size FinalSize = new System.Drawing.Size(400, 400); 
private Timers.Timer ChangeSizeTimer = new Timers.Timer(25); 
public delegate void ChangeSizeDelegate(System.Drawing.Size Size); 
public void ChangeSize(System.Drawing.Size Size){ 
    if (this.InvokeRequired) { 
        this.Invoke(new ChangeSizeDelegate(ChangeSize), Size); 
    } 
    else { 
        this.Size = Size; 
    } 
} 
public void TimerEvt(object Sender, Timers.ElapsedEventArgs e) { 
    System.Drawing.Size oSize; 
    //Do whatever it is you have to do to calculate your next size 
    ChangeSize(oSize);    
} 
private void Form1_Load(object sender, System.EventArgs e) { 
    this.Size = new System.Drawing.Size(200, 200); 
    ChangeSizeTimer.Start(); 
}
 

I'll leave you to calculate the sizes...just use a basic calculation to determine if your form has reached the right size or not. When it does, kill the timer.

[sentra50]

excellent! thank you very much for this, I am trying it now.

[sentra50]

I dont understand this.
It never enters the TimerEvt() method, therefore it never enters ChangeSize() method.

What event do I need to set for it to work?

All it does is it enters Form_Load and thats it.

later edit:
ok I added an event now.

It does not work. Here is the code as it is now:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
 
 
namespace diagnostics
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            changeSizeTimer.Elapsed += new System.Timers.ElapsedEventHandler(changeSizeTimer_Elapsed);
        }
 
        void changeSizeTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            System.Drawing.Size oSize;
            oSize = this.Size;
            if (finalSize == oSize)
            {
                changeSizeTimer.Stop();
            }
            changeSize(oSize);
        }
 
        Size finalSize = new Size(400, 400);
        private System.Timers.Timer changeSizeTimer = new System.Timers.Timer(25);
 
        public delegate void changeSizeDelegate(Size Size);
 
        public void changeSize(Size Size)
        {
            if (this.InvokeRequired)
            {
                this.Invoke(new changeSizeDelegate(changeSize), Size);
            }
            else
            {
                this.Size = Size;
            }
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            this.Size = new System.Drawing.Size(200, 200);
            changeSizeTimer.Start();
        }
 
    }
}
 

[balabaster]

I dont understand this.
It never enters the TimerEvt() method, therefore it never enters ChangeSize() method.

What event do I need to set for it to work?

All it does is it enters Form_Load and thats it.

later edit:
ok I added an event now.

It does not work. Here is the code as it is now:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
 
 
namespace diagnostics
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
changeSizeTimer.Elapsed += new System.Timers.ElapsedEventHandler(changeSizeTimer_Elapsed);
}
 
void changeSizeTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
System.Drawing.Size oSize;
oSize = this.Size;
if (finalSize == oSize)
{
changeSizeTimer.Stop();
}
changeSize(oSize);
}
 
Size finalSize = new Size(400, 400);
private System.Timers.Timer changeSizeTimer = new System.Timers.Timer(25);
 
public delegate void changeSizeDelegate(Size Size);
 
public void changeSize(Size Size)
{
if (this.InvokeRequired)
{
this.Invoke(new changeSizeDelegate(changeSize), Size);
}
else
{
this.Size = Size;
}
}
 
private void Form1_Load(object sender, EventArgs e)
{
this.Size = new System.Drawing.Size(200, 200);
changeSizeTimer.Start();
}
 
}
}
 

Did you get this working yet? The code you posted looks okay at first glance. Don't want to waste time trying to figure out something you already fixed. Cheers.

[Shashi Sadasivan]

Make sure that the timer is enabled (by default it is set as false ie not enabled) which can cause some headache

[sentra50]

thank you for your input, both of you.

It is not working yet but I am trying to figure out why I m sure its something small that I am missing :)

Thank you again.

[balabaster]

thank you for your input, both of you.

It is not working yet but I am trying to figure out why I m sure its something small that I am missing :)

Thank you again.

Not that there's anything wrong with it that I can see...but try changing the names of your Size parameters...ma ybe that's causing a hiccup. I know that this functionality is supposed to be allowed, but I've had mixed success with calling objects by their typename, so now I try not to.