how can I know the width of blank

[voostone]

with the tips i know the width of bar

BarWidth = ((((ChartWidth - LeftGap -

RightGap)/NumberOfPoints)/NumberOfSeries)*Volume)/100

 

Now how can i know the width of the label 1,2,3

or the coordinate of label 4

 Thanks.

 

[AndreG]

 You are looking for the ValueToPixel method. Take a look at your documentation.

[voostone]

when i used the method ValueToPixel

but x,y  always return 0.

ValueToPixel(Xvalue, Yvalue, x, y, nYAxis)

Yvalue = ChartName.Series(SeriesIndex).Yvalue(PointIndex)

But how can I know the Xvalue??

thanks

[voostone]

I download a demo VB source. It works without problem.

When I transfer the function in the file of cfxocx.bas

into PB(powerbuilder). It doesn't work correctly.

 

Function CHART_LOWORD(ByVal l As Long)

  l = l And &HFFFF&

  If (l > 32767) Then 'why it's 32767? In PB the value is very big..

  l = l - 65536

  End If

  CHART_LOWORD = CInt(l)

End Function

 

Thank you very much!

 

 

[AndreG]

 That method needs to be called after the whole chart has been calculated. Call it after you are done configuring the chart, call the RecalcScale method and try again.

[voostone]

Function CHART_ML(ByVal wLow As Integer, ByVal wHi As Integer)

  CHART_ML = CLng(&H10000 * wHi) + wLow

End Function

 

(&H10000 * wHi)  = 65536 * wHi ???

[voostone]

I called the RecalcScale method, but the result is 0.

Ll_iy =chart.object.Series(0).Yvalue(1) //Ll_iy equals the value of the chart

chart.object.ValueToPixel(Xvalue, Ll_iy, Ll_rx, Ll_ry, 0)

the method i called is correct??

i don't know the Xvalue..So i try 0, 1, 200 and so on..