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Home » .NET Programming » Visual Basic .NET » create Graphic frequency Equalizer


create Graphic frequency EqualizerExpand / Collapse
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Posted 2/19/2008 12:30:38 PM
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Dear friend,

i am using vb.net2005 express edition
is this possible to create Graphic frequency Equalizer in vb.net.becos i am doing vibration monitoring system project.so i need to create Graphic frequency Equalizer .so i have to build scrolable control to increase and decrese the frequency values using the contol..is this possible to create in vb.net if means please show me if there is any link or example for this please


Blast the Mind
Post #24207
Posted 2/19/2008 5:12:03 PM
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Sorry, Im trying to understand more, what your really trying to do?? Is the frequency values going to be user input(are u going to put in the values?) is it an external input? What kind of graphics do you want to see? waves? charts? etc.. Need a little more info to give my opinion
Post #24215
Posted 2/19/2008 9:26:44 PM
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dear friend,

actually two type of inputs.
1. i should select the the frequency values from scrolable control.
2.if i type the frequency value using textbox the it should be automatically changed in scrollable control.

so please help me to do this please

Blast the Mind
Post #24216
Posted 2/19/2008 9:41:28 PM
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If that is all you are doing, you could just use a Trackbar control that comes with VS.  You can easily set or read it's value.  From your description, it seems like this is all you need...
Post #24217
Posted 2/20/2008 9:46:18 AM
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Actually i need to fill red color inside VScrollbar.is it possible to use. becos while scrolling the intensity of the redcolor has to change .but i have use one control for both(scrolling and filling color inside the scrollbar). please help me to achieve this please

Blast the Mind
Post #24223
Posted 2/20/2008 12:35:25 PM
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using the following code i can able to achieve somthing.

Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
TrackBar1.BackColor = Color.FromArgb(TrackBar1.Value / TrackBar1.Maximum * 255, 0, 0)
End Sub

Private Sub TrackBar1_Scroll(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TrackBar1.Scroll
TextBox1.Text = TrackBar1.Value
TrackBar1.BackColor = Color.FromArgb(TrackBar1.Value / TrackBar1.Maximum * 255, 0, 0)
End Sub

is it possible to set all the color as back ground for track bar? if means please help me to do this

Blast the Mind
Post #24226
Posted 2/20/2008 1:34:45 PM
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Do you mean set the slider color as well?  I don't think you can do that with this control by default.  If you are wanting to do something like that you would have to inherit this control and override the paint even for it to do that.  Alternatively, you could create your own slider control.
Post #24228
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