Article: Q157048
Product(s): Microsoft FoxPro
Version(s):
Operating System(s):
Keyword(s): kbnokeyword kbvfp500 kbvfp600
Last Modified: 12-AUG-1999
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The information in this article applies to:
- Microsoft Visual FoxPro for Windows, versions 5.0, 6.0
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SUMMARY
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If you click Toolbars on the View menu, the Toolbars dialog box appears, which
allows you to manipulate check boxes from within a ListBox Control. This article
illustrates how you can create this functionality using Visual FoxPro.
MORE INFORMATION
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Use the following steps to create a ListBox control similar to the one in the
Visual FoxPro Toolbars dialog box:
1. Create a form using the "CREATE FORM test" command. This example assumes that
you have installed Visual FoxPro and all its components to the C:\Vfp
directory, and this is what is returned by the VFP HOME() command. NOTE: this
code uses both the Box.bmp and Checkbx.bmp files. In Visual FoxPro 6.0, these
files are located in the following new locations:
HOME(2)+ "tastrade\bitmaps\checkbx.bmp"
HOME(2)+ "tastrade\bitmaps\box.bmp"
Please modify the code examples below when running this code in Visual FoxPro
6.0.
2. Add two new properties, NumLstItm and ItemSel[1], to the form. The first
property holds the number of items you would like the ListBox control to
display, and the second property keeps track of whether specific items in the
ListBox control are selected(1) or not selected(0).
3. Right-click the form and click Properties on the Shortcut menu. This takes
you to the Properties dialog box for the form.
4. Select the NumLstItm property from the All tab or the Other tab of the
Property dialog box, and set it to the number of items you want to have in
the ListBox control--for example, set NumLstItm to 5.
5. Add the following code to the INIT event of the form:
DIMENSION ThisForm.ItemSel(ThisForm.NumLstItm)
FOR i= 1 to ThisForm.NumLstItm
ThisForm.ItemSel(i)=0
endfor
6. Add a ListBox control to the form with the following settings:
MultiSelect = .F. - False
Name = List1
RowSourceType = 1 - Value
RowSource = One,Two,Three,Four,Five
NOTE: Make sure that the NumLstItm property of the form is set to the same
number as the number of items you have in the RowSource property of the
ListBox control. For example, if the NumLstItm property of the form is set to
5, then the RowSource property of the ListBox control should contain 5 items
separated by commas.
7. Add the following code to the INIT event of the ListBox control:
This.Picture=HOME()+"samples\tastrade\bitmaps\box.bmp"
8. Add the following code to the Click event of the ListBox:
LPARAMETERS nButton, nShift, nXCoord, nYCoord
IF LASTKEY()!= 5 AND LASTKEY() != 24
IF ThisForm.ItemSel(This.ListItemID)=0
This.Picture(This.ListItemID)=HOME()+ ;
"samples\tastrade\bitmaps\checkbx.bmp"
ThisForm.ItemSel(This.ListItemID)=1
ELSE
IF ThisForm.ItemSel(This.ListItemID)=1
This.Picture(This.ListItemID)=HOME()+"samples\tastrade\bitmaps\box.bmp"
ThisForm.ItemSel(This.ListItemID)=0
ENDIF
ENDIF
ENDIF
When you run the form, the Icons of all the Items in the ListBox display an
empty check box. With the above code, if you left-click an item, then the
icon of the item changes to a Box with an "x" in it.
9. Add the following code to the KEYPRESS event of the ListBox:
LPARAMETERS nKeyCode, nShiftAltCtrl
IF nKeyCode=32
IF ThisForm.ItemSel(This.ListItemID)=0
This.Picture(This.ListItemID)=HOME()+ ;
"samples\tastrade\bitmaps\checkbx.bmp"
ThisForm.ItemSel(This.ListItemID)=1
ELSE
IF ThisForm.ItemSel(This.ListItemID)=1
This.Picture(This.ListItemID)=HOME()+"samples\tastrade\bitmaps\box.bmp"
ThisForm.ItemSel(This.ListItemID)=0
ENDIF
ENDIF
ENDIF
With the above code if you press the space bar, the Icon of the highlighted
Item toggles between an empty check box and a check box with an "x" in it.
10. Create a command button and set its caption to "List of Selected Items." Add
the following code to the click event of the button:
isel=""
FOR i = 1 TO ThisForm.NumLstItm
IF ThisForm.ItemSel(i)=1
if i = 1
isel = isel + ThisForm.List1.ListItem(i)
ELSE
isel = isel + "; " + ThisForm.List1.ListItem(i)
endif
ENDIF
ENDFOR
WAIT WINDOW isel
Additional query words:
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Keywords : kbnokeyword kbvfp500 kbvfp600
Technology : kbVFPsearch kbAudDeveloper kbVFP500 kbVFP600
Issue type : kbhowto
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