Q197487: BUG: MSChart EditCopy Sends Incorrect Legends To Clipboard
Article: Q197487
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:5.0,6.0
Operating System(s):
Keyword(s): kbAPI kbCtrl kbGrpDSUser kbVBp kbVBp500bug kbVBp600bug kbGrpDSVB
Last Modified: 11-JAN-2001
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The information in this article applies to:
- Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0
- Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0
- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0
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SYMPTOMS
========
The EditCopy method of the MSChart control is used to send a copy of the chart
to the clipboard. When the clipboard contents are pasted or saved, any chart
legends display only their default values ("C1", "C2", and so forth) instead of
the values that were specified by the program.
RESOLUTION
==========
Create an image of the chart using a PictureBox control and send the image to
the clipboard.
STATUS
======
Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.
MORE INFORMATION
================
Steps to Reproduce Behavior
---------------------------
1. Create a Visual Basic Standard EXE project. Form1 is created by default.
2. From the Project menu, choose Components, which opens the Components dialog
box. Click "Microsoft Chart Control", and then click OK.
3. Add a Chart control to Form1 and set the chart's ShowLegend property to True.
4. Add the following code to the General Declarations section of Form1:
Option Explicit
Private Sub Form_Load()
' Set the chart legends to some text value
MSChart1.Plot.SeriesCollection.Item(1).LegendText = "Total Space"
MSChart1.Plot.SeriesCollection.Item(2).LegendText = "Used Space"
' Call the EditCopy method to send the chart to the clipboard
MSChart1.EditCopy
' Save the data on the clipboard as a bitmap
' you can also use clipboard viewer to see everything
SavePicture Clipboard.GetData, "c:\test1.bmp"
End Sub
5. Run the program and the bitmap image of the chart control is stored in the
file C:\test1.bmp.
6. Open the file test1.bmp using Paint, the Clipboard Viewer, or another image
editor. The default values of the legend text were used rather than the
values set by the sample program.
Steps to Workaround the Problem
-------------------------------
1. Create a Visual Basic Standard EXE project. Form1 is created by default.
2. From the Project menu, choose Components, which opens the Components dialog
box. Click "Microsoft Chart Control", and then click OK.
3. Add a Chart, a CommandButton, and a PictureBox control to Form1.
4. Set the ShowLegend property of MSChart1 to True.
5. Add the following code to the General Declarations section of Form1:
Option Explicit
Private Declare Function SendMessage Lib "user32" Alias _
"SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long
Private Const WM_PAINT = &HF
Private Const WM_PRINT = &H317
Private Const PRF_CLIENT = &H4& ' Draw the window's client area.
Private Const PRF_CHILDREN = &H10& ' Draw all visible child windows.
Private Const PRF_OWNED = &H20& ' Draw all owned windows.
Private Sub Command1_Click()
Dim rv As Long
' Make sure picturebox is same size as the chart.
With Picture1
.Height = MSChart1.Height
.Width = MSChart1.Width
End With
Picture1.AutoRedraw = True
rv = SendMessage(MSChart1.hwnd, WM_PAINT, Picture1.hDC, 0)
Picture1.Picture = Picture1.Image
Picture1.AutoRedraw = False
' Sent the picture to the clipboard.
Clipboard.Clear
Clipboard.SetData Picture1.Picture
' Save the picture on disk.
SavePicture Form1.Picture1.Picture, "c:\testpic.bmp"
End Sub
Private Sub Form_Load()
' Set our legends.
With MSChart1
.Plot.SeriesCollection.Item(1).LegendText = "Total Disk Space"
.Plot.SeriesCollection.Item(2).LegendText = "Used Disk Space"
End With
Picture1.Visible = False
End Sub
6. Run the program and click Command1 to store the bitmap image of the chart
control in the file C:\testpic.bmp.
7. Open the file testpic.bmp using Paint or another image editor. You can also
use the clipboard viewer to directly view the clipboard contents. Since the
bitmap was created using the image on the screen, the legend text appears
correctly as part of the image.
REFERENCES
==========
For additional information, please see the following articles in the Microsoft
Knowledge Base:
Q188006 BUG: EditCopy Incorrectly Copies Series Edge/Line Color of Chart
Q178076 HOWTO: Use a PictureBox to Control Orientation Printing a Form
Additional query words:
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Keywords : kbAPI kbCtrl kbGrpDSUser kbVBp kbVBp500bug kbVBp600bug kbGrpDSVB
Technology : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVBA500 kbVBA600 kbVB500 kbVB600
Version : WINDOWS:5.0,6.0
Issue type : kbbug
Solution Type : kbpending
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