Creates a solid color bitmap
#include <GuiTreeView.au3>
_GUICtrlTreeView_CreateSolidBitMap ( $hWnd, $iColor, $iWidth, $iHeight )
| $hWnd | Control ID/Handle to the control | 
| $iColor | The color of the bitmap, stated in RGB | 
| $iWidth | The width of the bitmap | 
| $iHeight | The height of the bitmap | 
#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
#include <GuiTreeView.au3>
#include <WindowsStylesConstants.au3>
Example()
Func Example()
    GUICreate("TreeView Create Solid BitMap (v" & @AutoItVersion & ")", 400, 300)
    Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_DISABLEDRAGDROP, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)
    Local $idTreeView = GUICtrlCreateTreeView(2, 2, 396, 268, $iStyle, $WS_EX_CLIENTEDGE)
    GUISetState(@SW_SHOW)
    Local $hImage = _GUIImageList_Create()
    _GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($idTreeView, 0xFF0000, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($idTreeView, 0x00FF00, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($idTreeView, 0x0000FF, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($idTreeView, 0xFF00FF, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($idTreeView, 0x000000, 16, 16))
    _GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($idTreeView, 0x00FFFF, 16, 16))
    _GUICtrlTreeView_SetNormalImageList($idTreeView, $hImage)
    For $x = 0 To _GUIImageList_GetImageCount($hImage) - 1
        _GUICtrlTreeView_Add($idTreeView, 0, StringFormat("[%02d] New Item", $x), $x, $x + 3)
    Next
    ; Loop until the user exits.
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
    GUIDelete()
EndFunc   ;==>Example