Databases
StackOverflow2013
Postsdbo
POc# winform - using timer to animate drop down menu
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POc# winform - using timer to animate drop down menu
    primarykey
    data
    text
    <p>I am trying to make an animated drop down menu in winforms. The form would expand when there is a mouse_enter event and contract back to original size when there is a mouse_leave event. I use a timer to control the rate of "animation" to achieve the desired result.</p> <p>upon running the first few times, the "animation" is according to what i want but after a few loops (mouse in -> mouse out - > mouse in -> mouse out -> etc), the animation starts to speed up until it reaches a point where it would just simply appear/disappear at a fast speed.</p> <p>are there alternatives to achieve this effect or maintain the desired rate of animation?</p> <p>btw, this is my first question here so do advise me if I broke any rules/formats etc!</p> <pre><code> private void setForm() { this.Location = new Point(Screen.GetWorkingArea(this).Width - this.Width, Screen.GetWorkingArea(this).Height - this.Height); } Timer Timer1; bool mode = false; private void B00nZPictureBox_MouseEnter(object sender, EventArgs e) { mode = true; Timer1 = new Timer(); Timer1.Interval = 10; Timer1.Tick += new EventHandler(Timer1_Tick); Timer1.Start(); } private void B00nZ_MouseLeave(object sender, EventArgs e) { mode = false; Timer1 = new Timer(); Timer1.Interval = 10; Timer1.Tick += new EventHandler(Timer1_Tick); Timer1.Start(); } void Timer1_Tick(object sender, EventArgs e) { int temp = Screen.GetWorkingArea(this).Height; if (mode) { if (this.Height &lt; temp) { this.Size = new Size(this.Width, this.Height + 35); } else if (this.Height &gt; temp) { if (this.Height - temp &gt; 10) { this.Size = new Size(this.Width, this.Height - 3); } else if (this.Height - temp &gt; 0) { this.Size = new Size(this.Width, this.Height - 1); } } else if (this.Height == temp) { Timer1.Stop(); Timer1.Dispose(); } } else { if (this.Height &gt; B00nZPictureBox.Height) { this.Size = new Size(this.Width, this.Height - 35); } else if (this.Height - B00nZPictureBox.Height &lt;= B00nZPictureBox.Height) { this.Size = new Size(this.Width, B00nZPictureBox.Height); } if (this.Height == B00nZPictureBox.Height) { Timer1.Stop(); Timer1.Dispose(); } } setForm(); } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. UScasperOne
    1. USuser776914
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POc# winform - using timer to animate drop down menu
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POc# winform - using timer to animate drop down menu
      1. This table or related slice is empty.
      1. VTDownMod
    3. VO
      singulars
      1. POc# winform - using timer to animate drop down menu
      1. This table or related slice is empty.
      1. VTUpMod
    1. COIt sounds like you have a problem with a global variable being changed after every iteration. Can you share some relevant code with us (the timer tick code for instance) so we can help you debug this?
      singulars
      1. POc# winform - using timer to animate drop down menu
      1. USIAmTimCorey
    2. COhi thanks for the quick reply, I did declare the timer as a global variable and a boolean flag to keep track of the expand/contract menu. I hope i did use the timer correctly..
      singulars
      1. POc# winform - using timer to animate drop down menu
      1. USuser776914
    3. COThe code really helps us understand. BTW, welcome to SO. You are doing a good job. Just remember when you are asking questions to look at it from our perspective. We need the information (especially the relevant code) to solve the issue. Too little information means we probably can't solve the issue and too much information means we have to wade through too much so we might get lost or not even try.
      singulars
      1. POc# winform - using timer to animate drop down menu
      1. USIAmTimCorey
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload