PureBasic Forums - English

Posted: **Thu Dec 08, 2011 7:43 pm**

In MacOS it is possible to limit the column width of a ListIconGadget
to a specified minimum and maximum value using API functions. Try
to change the column width of the Address column in the following
example before and after clicking onto the button:

Code: Select all

EnableExplicit

ImportC ""
  CFRelease(CFTypeRef.L)
  GetDataBrowserListViewHeaderDesc(DataBrowserRef.L, ColumnID.L, *HeaderDesc)
  GetDataBrowserTableViewColumnProperty(DataBrowserRef.L, Column.L, *ColumnID)
  SetDataBrowserListViewHeaderDesc(DataBrowserRef.L, ColumnID.L, *HeaderDesc)
EndImport

Structure RGBColor
  Red.U
  Green.U
  Blue.U
EndStructure

Structure ControlFontStyleRec
  Flags.W
  Font.W
  Size.W
  Style.W
  Mode.W
  Just.W
  ForeColor.RGBColor
  BackColor.RGBColor
EndStructure

Structure DataBrowserListViewHeaderDesc
  Version.L
  MinimumColumnWidth.U
  MaximumColumnWidth.U
  TitleOffset.W
  CFTitleString.L
  InitialSortOrder.L
  FontStyle.ControlFontStyleRec
  IconInfo.L
EndStructure

Procedure LimitColumnWidth(ListIconID.L, Column.L, MinimumWidth.U, MaximumWidth.U)
  Protected ColumnID.L
  Protected HeaderDesc.DataBrowserListViewHeaderDesc
 
  If GetDataBrowserTableViewColumnProperty(GadgetID(ListIconID), Column, @ColumnID) = 0
    If GetDataBrowserListViewHeaderDesc(GadgetID(ListIconID), ColumnID, @HeaderDesc) = 0
      Debug "Previous column width:"
      Debug "Minimum = " + Str(HeaderDesc\MinimumColumnWidth) + ", Maximum = " + Str(HeaderDesc\MaximumColumnWidth)
      HeaderDesc\MinimumColumnWidth = MinimumWidth
      HeaderDesc\MaximumColumnWidth = MaximumWidth
      SetDataBrowserListViewHeaderDesc(GadgetID(ListIconID), ColumnID, @HeaderDesc)
      Debug "New column width:"
      Debug "Minimum = " + Str(MinimumWidth) + ", maximum = " + Str(MaximumWidth)
      CFRelease(HeaderDesc\CFTitleString)
    EndIf
  EndIf
EndProcedure

OpenWindow(0, 270, 100, 445, 120, "Limit minimum and maximum width of Address column")
ListIconGadget(0, 5, 5, 435, 80, "Name", 110)
AddGadgetColumn(0, 1, "Address", 304)
AddGadgetItem(0, -1, "Harry Rannit" + #LF$ + "12 Parliament Way, Battle Street, By the Bay")
AddGadgetItem(0, -1, "Ginger Brokeit" + #LF$ + "130 PureBasic Road, BigTown, CodeCity")
ButtonGadget(1, WindowWidth(0)/ 2 - 80, WindowHeight(0) - 30, 160, 20, "Limit column width")

Repeat
  Select WaitWindowEvent()
    Case #PB_Event_CloseWindow
      Break
    Case #PB_Event_Gadget
      If EventGadget() = 1
        If EventType() = #PB_EventType_LeftClick
          LimitColumnWidth(0, 1, 100, 304)
          DisableGadget(1, #True)
        EndIf
      EndIf
  EndSelect
ForEver

PureBasic Forums - English

Set minimum and maximum column width of ListIconGadget

Set minimum and maximum column width of ListIconGadget