Creates a dragging bitmap for the specified item
#include <GuiTreeView.au3>
_GUICtrlTreeView_CreateDragImage ( $hWnd, $hItem )
| $hWnd | Control ID/Handle to the control |
| $hItem | Handle to the item |
| Success: | the image list handle to which the dragging bitmap was added. |
| Failure: | 0. |
If you create the control without an associated image list, you cannot use this function to create the image to display during a drag operation.
You must implement your own method of creating a drag cursor.
You are responsible for destroying the image list when it is no longer needed.
#include <GUIConstantsEx.au3>
#include <GuiImageList.au3>
#include <GuiTreeView.au3>
#include <WinAPIGdiDC.au3>
#include <WinAPIMisc.au3>
#include <WinAPISysWin.au3>
#include <WindowsConstants.au3>
Example()
Func Example()
Local $hGUI = GUICreate("TreeView Create Drag Image (v" & @AutoItVersion & ")", 400, 300)
Local $iStyle = BitOR($TVS_EDITLABELS, $TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_SHOWSELALWAYS, $TVS_CHECKBOXES)
Local $hTreeView = GUICtrlGetHandle(GUICtrlCreateTreeView(2, 2, 396, 268, $iStyle, $WS_EX_CLIENTEDGE))
GUISetState(@SW_SHOW)
; Load images
Local $hImage = _GUIImageList_Create(16, 16, 5, 3)
_GUIImageList_AddIcon($hImage, "shell32.dll", 110)
_GUIImageList_AddIcon($hImage, "shell32.dll", 131)
_GUIImageList_AddIcon($hImage, "shell32.dll", 165)
_GUIImageList_AddIcon($hImage, "shell32.dll", 168)
_GUIImageList_AddIcon($hImage, "shell32.dll", 137)
_GUIImageList_AddIcon($hImage, "shell32.dll", 146)
_GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($hTreeView, 0xFF0000, 16, 16))
_GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($hTreeView, 0x00FF00, 16, 16))
_GUIImageList_Add($hImage, _GUICtrlTreeView_CreateSolidBitMap($hTreeView, 0x0000FF, 16, 16))
_GUICtrlTreeView_SetNormalImageList($hTreeView, $hImage)
_GUICtrlTreeView_BeginUpdate($hTreeView)
Local $iImage, $hItem
For $x = 0 To 5
$iImage = Random(0, 8, 1)
$hItem = _GUICtrlTreeView_Add($hTreeView, 0, StringFormat("[%02d] New Item", $x), $iImage, $iImage)
For $y = 0 To 3
$iImage = Random(0, 8, 1)
_GUICtrlTreeView_AddChild($hTreeView, $hItem, StringFormat("[%02d] New Child", $y), $iImage, $iImage)
Next
Next
_GUICtrlTreeView_EndUpdate($hTreeView)
_GUICtrlTreeView_SelectItem($hTreeView, 0)
; Loop until the user exits.
Local $bDragging = False, $hDrag
While 1
Switch GUIGetMsg()
Case $GUI_EVENT_MOUSEMOVE
If $bDragging Then DrawDragImage($hTreeView, $hDrag)
Case $GUI_EVENT_PRIMARYDOWN
Local $hSelected = _GUICtrlTreeView_GetSelection($hTreeView)
If $hSelected Then
$bDragging = True
; Create drag image
$hDrag = _GUICtrlTreeView_CreateDragImage($hTreeView, $hSelected)
DrawDragImage($hTreeView, $hDrag)
EndIf
Case $GUI_EVENT_PRIMARYUP
If $bDragging Then
$bDragging = False
; delete image list
_GUIImageList_Destroy($hDrag)
_WinAPI_InvalidateRect($hTreeView)
_WinAPI_InvalidateRect(HWnd($hGUI))
EndIf
Case $GUI_EVENT_CLOSE
ExitLoop
EndSwitch
WEnd
GUIDelete()
EndFunc ;==>Example
; Draw drag image
Func DrawDragImage(ByRef $hControl, ByRef $hDrag)
Local $tPoint, $hDC
$hDC = _WinAPI_GetWindowDC($hControl)
$tPoint = _WinAPI_GetMousePos(True, $hControl)
_WinAPI_InvalidateRect($hControl)
_GUIImageList_Draw($hDrag, 0, $hDC, DllStructGetData($tPoint, "X"), DllStructGetData($tPoint, "Y"))
_WinAPI_ReleaseDC($hControl, $hDC)
EndFunc ;==>DrawDragImage