Function Reference

GUICtrlSetImage

Sets the bitmap or icon image to use for a control.

GUICtrlSetImage ( controlID, filename [, iconname [, icontype]] )

Parameters

controlID	The control identifier (controlID) as returned by a GUICtrlCreate... function.
filename	The filename containing the picture to be display on the control.
iconname	[optional] Icon name if the file contain multiple icon. Can be an ordinal name if negative number. Otherwise -1.
icontype	[optional] To select a specific icon size : 0 = small, 1 = normal (default). for a TreeViewItem the icon size : 2 = selected, 4 for non-selected item.

Return Value

Success:	Returns 1.
Failure:	Returns 0.

Remarks

Use a resource hacker to know the value of the valid icon name in a file.

If used on a Button control the image will be displayed on the button. Images can also be set for Checkbox controls as long as the $BS_PUSHLIKE style is used. In both case the $BS_ICON or $BS_BITMAP styles are needed to select the type of the picture used. The first icon resolution will be used in a multi icon resolution file. I.E. if a 128x128 is the first resolution and the control is 64x64 the image will be truncated.

!!! If use this command on a TreeViewItem the first time, then all other items will use this icon/image automatically by default !!!
If you use GUICtrlSetImage on a TreeView or ListView then all items of it will change to this icon/image.

Passing a positive number will reference the string equivalent icon name.
Passing a negative number causes 1-based "index" behaviour. Some Dll can have icon extracted just with negative numbers.

Example

#include <GUIConstants.au3>

GUICreate("My GUI") ; will create a dialog box that when displayed is centered

GUICtrlCreateButton ("my picture button", 10,20,40,40, $BS_ICON)
GUICtrlSetImage (-1, "shell32.dll",22)

GUISetState ()

; Run the GUI until the dialog is closed
While 1
$msg = GUIGetMsg()

If $msg = $GUI_EVENT_CLOSE Then ExitLoop
Wend