Diagram

[eXterminator]

How can i make a line-diagram?

[Jotaf98]

Hum what do you mean? What's the diagram for? Could you explain a bit more please?

[eXterminator]

I have a number of values which i want to show in a more exciting way...

[Jotaf98]

That's easy

How are the values stored? In a database? In variables? In arrays?

If you can store them in arrays, it's gonna be much easier

[eXterminator]

I store them in an array

[Jotaf98]

In that case it's easy

Do you have any idea of what the maximum value should be? In that case we can cut down the code a lot

[eXterminator]

Yeah, values is only 0-24.

[Jotaf98]

Cool

Here's the code. It loops trough all the elements in the array except for the last one, and draws a line between this element and the next one
(Here, X represents the index of each element, and Y represents the value of each element)

For i = 0 to UBound(TheValues)-1
    Form1.Line (i*15,TheValues(i)*15)-((i+1)*15,TheValues(i+1)*15)
Next i

The size of the grid, in this case, is 15 (pixels or twips, it depends on the ScaleMode of the form), but you can change that value if you want

[eXterminator]

Is there any way to color it? Fill the diagram i mean.

[Jotaf98]

No, I'm afraid that would be a bit hard unless you're familiar with the Windows API

[eXterminator]

Uhh, just the basics, i know how to use API. What API call should i use?

[Jotaf98]

It's "Fill"-something

Look for an article on it, if you use it to paint just below one of the items of the array it should work

[eXterminator]

Public Declare Function ExtFloodFill Lib "gdi32" Alias "ExtFloodFill" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal crColor As Long, ByVal wFillType As Long) As Long

This? There is a FloodFill API call to, but it look almost the same.

Thanks, think i'm going to mess around a bit with this.

[Jotaf98]

Yeah, I think it's the FloodFill one but the one you have should work ok

If you need help... just post here again

[Jotaf98]

Yes, but that wouldn't draw a filled graph unless it was made with columns

[Zaei]

Ah, I didnt read through the entire thread. This is a line graph =).

Z.

[jim mcnamara]

VB also has controls for graphing - MSChart is really high end powered and does 3D renderings. High memory usage too.

DataGrid is another. If you must do a lot of graphs or change it constantly like in showinf %use of a channel, these are easier to program.

[eXterminator]

What's MSChart, and DataGrid?

[eXterminator]

Ohh, found MSChart, but how do you use it?