Microsoft KB Archive/157048

= How To Add a Check Box to a List in Visual FoxPro =

Article ID: 157048

Article Last Modified on 6/29/2004

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APPLIES TO


 * Microsoft Visual FoxPro 5.0 Standard Edition
 * Microsoft Visual FoxPro 6.0 Professional Edition

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This article was previously published under Q157048



SUMMARY
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
Use the following steps to create a ListBox control similar to the one in the Visual FoxPro Toolbars dialog box:

  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.  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). Right-click the form and click Properties on the Shortcut menu. This takes you to the Properties dialog box for the form. 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.  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   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. </li>  Add the following code to the INIT event of the ListBox control: This.Picture=HOME+"samples\tastrade\bitmaps\box.bmp" </li>  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. </li>  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. </li>  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 </li></ol>

Keywords: kbhowto KB157048

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