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psymon25
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C# Form Resize issues

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Hi

I am have an application that runs in the system tray and creates a messenger type popup.

This all works fine (on my laptop), i have a checkbox that allows the user to view more details which then should resize the popup (form) to an expanded view showing a richtextbox..

I thought i had this cracked on my dev machine, but when testing on another pc with different resolution I cannot get this right????

I have placed the checkbox code below,to see if you anyone can point out where i am going wrong?

Many thanks

private void cb_Details_CheckedChanged(object sender, EventArgs e)
        {
            if (this.cb_Details.Checked == true)
            {
                this.Size = this.Size.Height == 614 ? new Size(458, 614) : new Size(458, 614);
               // Application.DoEvents();
                //X = Screen.GetWorkingArea(this).Width;
                //Y = Screen.GetWorkingArea(this).Height;
                //this.DesktopLocation = new Point(X - this.Width, Y + this.Height);
                //this.Location = new Point(X - this.Width, Y + this.Height);
                //this.DesktopLocation = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, Screen.PrimaryScreen.Bounds.Height - this.Height - 50);
            }
            else
            {
                this.Size = this.Size.Height == 149 ? new Size(458, 149) : new Size(458, 149);
                //Application.DoEvents();
                //X = Screen.GetWorkingArea(this).Width;
                //Y = Screen.GetWorkingArea(this).Height;
                //this.DesktopLocation = new Point(X - this.Width, Y + this.Height);
                //X = Screen.GetWorkingArea(this).Width;
                //Y = Screen.GetWorkingArea(this).Height;
                //this.Location = new Point(X - this.Width, Y + this.Height);
                //this.DesktopLocation = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, Screen.PrimaryScreen.Bounds.Height - this.Height - 50); this works great on my devmachine....
            }
        }


All the commented out areas are things i have tried the following works great on dev machine but thats it:

private void cb_Details_CheckedChanged(object sender, EventArgs e)
        {
            if (this.cb_Details.Checked == true)
            {
                this.Size = this.Size.Height == 614 ? new Size(458, 614) : new Size(458, 614);
                Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, Screen.PrimaryScreen.Bounds.Height - this.Height - 50);
            }
            else
            {
                this.Size = this.Size.Height == 149 ? new Size(458, 149) : new Size(458, 149);
                Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, Screen.PrimaryScreen.Bounds.Height - this.Height - 50);
            }
        }


Any assistance with this would be amazing

Thanks in advance

c# forms resize
  • asked one year ago
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last answered one year ago

2 answers

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OK thanks madhatter, unfortunately this did not address the behaviour i was seeing on client PC's.

The following solution has managed to cure this and it seems to be related to secondary forms.

Main Form Load:

X = Screen.GetWorkingArea(this).Width;
Y = Screen.GetWorkingArea(this).Height;			
this.Location = new Point(X - this.Width, Y + this.Height - n_TaskBarHeight);


Now if i add a second form for instance an about form the above does not apply and causes the behaviour of positioning the 2nd form to be wrong, I tried various AutoScaleMode options to no avail, what i had to do is on any secondary forms is this:

About Form:
private void AboutBox_Load(object sender, EventArgs e)
{
Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, Screen.PrimaryScreen.Bounds.Height - this.Height - n_TaskBarHeight);
}


the n_TaskBarHeight is as follows:

int n_TaskBarHeight = Screen.PrimaryScreen.Bounds.Bottom - Screen.PrimaryScreen.WorkingArea.Bottom;


This gives the correct height value of the task bar so I can sit the app immediately above.

The following is the working code that implements the form size change via a checkbox:

private void cb_Details_CheckedChanged(object sender, EventArgs e)
{
    if (this.cb_Details.Checked == true)
    {
        this.Size = this.Size.Height == 621 ? new Size(452, 621) : new Size(452, 621);

        Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, Screen.PrimaryScreen.Bounds.Height - this.Height - n_TaskBarHeight);
        Application.DoEvents();
    }
    else
    {
        this.Size = this.Size.Height == 153 ? new Size(452, 153) : new Size(452, 153);

        Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, Screen.PrimaryScreen.Bounds.Height - this.Height - n_TaskBarHeight);
        Application.DoEvents();
    }
}


Not sure if this is a logic problem on my side? but took me quite sometime to get this working, the above items work great on xp,vista,win 7 etc at different resolutions and dpi.

For reference with the above i have the AutoScaleMode set to Inherit.
Hope this goes someway to helping others.

Thanks

  • answered one year ago by:

    psymon25
    482
  • edited one year ago
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change the AutoScaleMode on the window from "Font" (or whatever it is) to None.

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