怎样给Windows Mobile的ListView画上背景？

vbfool 2009-09-09 04:59:03

继承ListView控件，能重写OnPaintBackgound，但是似乎完全无效啊，OnPaint也没有作用，那么如何去增加呢？还是铁定无法实现？

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trentliu 2009-11-02

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using System;



using System.Windows.Forms;



using System.Drawing;



using System.Runtime.InteropServices;



using Microsoft.WindowsCE.Forms;



 



namespace ListViewBackground



{



  static class Helper



  {



    // ListView messages



    private const int LVM_FIRST = 0x1000;



    private const int LVM_SETBKIMAGE = (LVM_FIRST + 138);



    [Flags]



    enum LVBKIF : int



    {



      SOURCE_NONE = 0x00000000,



      SOURCE_HBITMAP = 0x00000001,



      SOURCE_URL = 0x00000002,



      SOURCE_MASK = 0x00000003,



      STYLE_NORMAL = 0x00000000,



      STYLE_TILE = 0x00000010,



      STYLE_MASK = 0x00000010,



      FLAG_TILEOFFSET = 0x00000100



    }



    class LVBKIMAGE



    {



      public LVBKIF ulFlags = LVBKIF.SOURCE_NONE;



      public IntPtr hbm = IntPtr.Zero;



      public IntPtr pszImage = IntPtr.Zero;



      public uint cchImageMax = 0;



      public int xOffsetPercent = 100;



      public int yOffsetPercent = 100;



    };



    public static void SetBackgroundImage (ListView control, Bitmap bitmap)



    {



      LVBKIMAGE lvBkImage = new LVBKIMAGE ();



      lvBkImage.ulFlags = LVBKIF.SOURCE_HBITMAP | LVBKIF.STYLE_TILE;



      lvBkImage.hbm = bitmap.GetHbitmap ();



      lvBkImage.cchImageMax = 0;



      lvBkImage.xOffsetPercent = 0;



      lvBkImage.yOffsetPercent = 0;



 



      Message msg = Message.Create (control.Handle, (int)LVM_SETBKIMAGE, (IntPtr)0, Marshal.AllocCoTaskMem (Marshal.SizeOf (lvBkImage)));



      Marshal.StructureToPtr (lvBkImage, msg.LParam, false);



      MessageWindow.SendMessage (ref msg);



      Marshal.FreeCoTaskMem (msg.LParam);



    }



  }



}