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Choose Icon dialog UDF


TomV
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Hi,

I'm new with DLL's, and this is my first UDF:

The UDF:

; #FUNCTION# ;===============================================================================
;
; Name...........: _ChooseIcon
; Description ...: Let the user choose an icon from a file (*.dll or *.exe)
; Syntax.........: _ChooseIcon($Dll_File = "\shell32.dll")
; Parameters ....: $sDll_File - The DLL or EXE file what contains icons
; Return values .: Success - Returns the icon index
;                  Failure - Returns -1 and Sets @Error:
;                  |0 - No error.
;                  |1 - DLL/EXE file don't exists!
;                  |2 - Can not call the DLL file 'shell32.dll'
;                  |3 - Can not get DLL struct data!
; Author ........: Tom Valk
; Modified.......:
; Remarks .......:
; Related .......: _ChooseColor, _ChooseFont
; Link ..........;
; Example .......; Yes
;
; ;==========================================================================================
Func _ChooseIcon($sDll_File = "\shell32.dll")
    $sDll_File = @SystemDir & $sDll_File
    If Not FileExists($sDll_File) Then
        SetError(1)
        Return -1
    EndIf
    Local $sscInt = DllStructCreate("int")
    Local $sscString = DllStructCreate("wchar[260]")
    Local $sstructsize = DllStructGetSize($sscString) / 2
    DllStructSetData($sscString, 1, $sDll_File)
    DllCall("shell32.dll", "none", 62, "hwnd", 0, "ptr", DllStructGetPtr($sscString), "int", $sstructsize, "ptr", DllStructGetPtr($sscInt))
    If @error Then
        SetError(2)
        Return -1
    EndIf
    Local $nIconIndex = DllStructGetData($sscInt, 1)
    If @error <> 0 Then
        SetError(3)
        Return -1
    EndIf
    Return $nIconIndex
EndFunc   ;==>_ChooseIcon

An example:

#AutoIt3Wrapper_Au3Check_Parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#include <IconChoose.au3>
Global $iIconIndex

; Example:

$iIconIndex = _ChooseIcon("\shell32.dll") ; Loads the DLL file: [@SystemDir]\shell32.dll

MsgBox(64, "_ChooseIcon Example", "Icon ID: " & $iIconIndex)

And if you like, you can add it to the Misc.au3 include file

Regards, Tom V

[font="Comic Sans MS"][size="4"]My UDF's:[/size]1. _ChooseIconAnd this is just the beginning[/font]

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Has been done already, and with few more options ;) (including proper error checking, wich is not the case in this function).

 

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You are wrong Zedna.

This function is better to call by ordinal. It's exported by name in version 6.0 or later of shell32.dll.

This way it's supported for all supporting systems for AutoIt.

Interesting information.

As far as I know calling functions by their number is faster.

but on different OS that number (maybe) may change.

So I expect it's better to use name instead of number.

It's also better for code readability.

As about support for Shell version < 6.0 I think it's not much problem because Autoit dropped support for older Win9x OS systems.

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Interesting information.

As far as I know calling functions by their number is faster.

but on different OS that number (maybe) may change.

So I expect it's better to use name instead of number.

It's also better for code readability.

As about support for Shell version < 6.0 I think it's not much problem because Autoit dropped support for older Win9x OS systems.

For readability I suppose a comment explaining would be enough.

I believe XP (No SP) is below requirements.

♡♡♡

.

eMyvnE

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