I'm a bit late to this party, but here is an example of how to get the index of the selected item in a dialog droplist (Combo) box control using a DllCall in a UDF:
;Make an example list to use in the ComboBox later:
dlVariable1 = "Apples":@TAB:"Apples":@TAB:"Grapes":@TAB:"Pears":@TAB:"Bananas":@TAB:"Apples":@TAB:"Grapes"
;The UDF
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;CBGet : Get info about ComboBox items v1.0 ....IFICantBYTE ;
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;hComboCtrl : Handle to the Combo (DropList) Control ;
;GetWhat : Use 1 to get the total number of items, anything else to get the index number of the selected item (in a zero based list) ;
;-----------------------------------------------------------------------------------------------------------------------------------------;
;Returns : Returns the total number of items, or the selected item's index number, depending on the request in the GetWhat parameter ;
;-----------------------------------------------------------------------------------------------------------------------------------------;
#Definefunction CBGet(hComboCtrl,GetWhat)
User32=StrCat(DirWindows(1),"user32.dll")
CB_GETCOUNT = 326;Gets the number of items in the list box of a combo box.
CB_GETCURSEL = 327;Gets the index of the currently selected item, if any, in the list box of a combo box.
If GetWhat == 1
CB_Msg = CB_GETCOUNT
Else
CB_Msg = CB_GETCURSEL
EndIf
Return DllCall(user32,long:"SendMessageA",long:hComboCtrl,long:CB_Msg,long:0,long:0)
#Endfunction
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;TEST DIALOG BELOW:
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#DefineSubRoutine InitDialogConstants()
;DialogprocOptions Constants
MSG_INIT=0 ; The one-time initialization
MSG_TIMER=1 ; Timer event
MSG_BUTTONPUSHED=2 ; Pushbutton or Picturebutton
MSG_RADIOPUSHED=3 ; Radiobutton clicked
MSG_CHECKBOX=4 ; Checkbox clicked
MSG_EDITBOX=5 ; Editbox or Multilinebox
MSG_FILESELECT=6 ; Filelistbox
MSG_ITEMSELECT=7 ; Itembox
MSG_COMBOCHANGE=8 ; Combobox/Droplistbox
MSG_CALENDAR=9 ; Calendar date change
MSG_SPINNER=10 ; Spinner number change
MSG_CLOSEVIA49=11 ; Close clicked (Enabled via DialogProcOptions 1002
MSG_FILEBOXDOUBLECLICK=12 ; Get double-click message on a FileListBox
MSG_ITEMBOXDOUBLECLICK=13 ; Get double-click message on an ItemBox
MSG_COMEVENT=14 ; COMCONTROL Event notification from DialogObject (NOT DialogProcOptions)
MSG_MENUITEM=15 ; MenuItem selected
MSG_MENUITEMINIT=16 ; MenuItem initialized
MSG_RESIZE=17 ; Dialog resized
MSG_RVITEMSELROW=18 ; Reportview item select row
MSG_RVDBLCLICKROW=19 ; Reportview double-click row
MSG_RVCHECKEDITEM=20 ; Reportview checked/unchecked Item
MSG_RVITEMTEXT=21 ; Reportview changed text of first column
MSG_RVHEADER=22 ; Reportview header clicked
DPO_DISABLESTATE=1000 ; codes -1=GetSetting 0=EnableDialog 1=DisableDialog
DPO_CHANGEBACKGROUND=1001 ; -1=Get Current otherise bitmap or color string
DPO_CHANGESYSMENU=1002 ; -1=Get Current 0=none 1=close 2=close/min 3=close/max 4=close/min/max
DPO_CHANGETITLE=1003 ; Set/Get Dialog Title - (-1 to get)
DPO_GETNAME=1004 ; Returns the name associated with a control's number.
DPO_GETNUMBER=1005 ; Returns the number associated with a control's name.
DPO_GETCLIENTAREA=1007 ; Returns a space delimited list of the width and height of the client area.
;DialogControlState Constants
DCSTATE_SETFOCUS=1 ; Give Control Focus
DCSTATE_QUERYSTYLE=2 ; Query control's style
DCSTATE_ADDSTYLE=3 ; Add control style
DCSTATE_REMOVESTYLE=4 ; Remove control style
DCSTATE_GETFOCUS=5 ; Get control that has focus
DCSTATE_MOVEMOUSEOVER=6 ; Move the mouse over the control
DCSTYLE_DEFAULT=0 ; Set Default Style
DCSTYLE_INVISIBLE=1 ; Set Control Invisible
DCSTYLE_DISABLED=2 ; Set Control Disabled
DCSTYLE_NOUSERDATA=4 ; Note: Setable via DialogControlState function ONLY SPINNER control only
DCSTYLE_READONLY=8 ; Sets control to read-only (user cannot type in data) EDITBOX MULTILINEBOX SPINNER
DCSTYLE_PASSWORD=16 ; Sets 'password mode' where only *'s are displayed EDITBOX
DCSTYLE_DEFAULTBUTTON=32 ; Sets a button as the default button PUSHBUTTON PICTUREBUTTON
DCSTYLE_DIGITSONLY=64 ; Set edit box to accept digits only EDITMOX MULTILINEBOX
DCSTYLE_FLAT=128 ; Makes a 'flat' hyperlink-looking button PUSHBUTTON PICTUREBUTTON
DCSTYLE_NOADJUST=256 ; Turns off auto-height adjustment ITEMBOX FILELISTBOX
DCSTYLE_TEXTCENTER=512 ; Center text in control VARYTEXT STATICTEXT
DCSTYLE_TEXTRIGHT=1024 ; Flush-Right text in control VARYTEXT STATICTEXT
DCSTYLE_NOSELCURLEFT=2048 ; No selection, cursor left EDITBOX MULTILINEBOX
DCSTYLE_NOSELCURRIGHT=4096 ; No selection, cursor right EDITBOX MULTILINEBOX
DCSTYLE_SHIELD=8192 ; Display Security Shield icon on button (Vista only) PUSHBUTTON PICTUREBUTTON
DCSTYLE_MENUCHECK=32768 ; Adds a check mark to the left of a menu item MENUITEM
DCSTYLE_MENURADIO=65536 ; Adds a radio button like dot graphic to the left of a menu item MENUITEM
DCSTYLE_MENUSEP=131072 ; Separator bar graphic MENUITEM
DCSTYLE_MENUBREAK=262144 ; Column break MENUBAR
DCSTYLE_NOHEADER=524288 ; No header bar REPORTVIEW
DCSTYLE_COLHEADER=1048576 ; First row column header REPORTVIEW
DCSTYLE_GRIDLINES=2097152 ; Grid lines REPORTVIEW
DCSTYLE_SELONEROW=4194304 ; Only one row can be selected at a time REPORTVIEW
DCSTYLE_SELALLROW = 8388608 ; Highlight complete row REPORTVIEW
DCSTYLE_SORTASC=16777216 ; Ascending sort REPORTVIEW
DCSTYLE_SORTDESC=33554432 ; Descending sort REPORTVIEW
DCSTYLE_EDITCOL=67108864 ; Edit first columns text REPORTVIEW
DCSTYLE_COLCHECKBOX=134217728 ; Add checkbox to first column REPORTVIEW
;DialogControlSet / DialogControlGet Constants
DC_CHECKBOX=1 ; CHECKBOX REPORTVIEW
DC_RADIOBUTTON=2 ; RADIOBUTTON
DC_EDITBOX=3 ; EDITBOX MULTILINEBOX
DC_TITLE=4 ; PICTURE RADIOBUTTON CHECKBOX PICTUREBUTTON VARYTEXT STATICTEXT GROUPBOX PUSHBUTTON MENUITEM
DC_ITEMBOXCONTENTS=5 ; ITEMBOX FILELISTBOX DROPLISTBOX REPORTVIEW
DC_ITEMBOXSELECT=6 ; ITEMBOX FILELISTBOX DROPLISTBOX REPORTVIEW
DC_CALENDAR=7 ; CALENDAR
DC_SPINNER=8 ; SPINNER
DC_MULTITABSTOPS=9 ; MULTILINEBOX
DC_ITEMSCROLLPOS=10 ; ITEMBOX FILELISTBOX
DC_BACKGROUNDCOLOR=11 ; RADIOBUTTON CHECKBOX VARYTEXT STATICTEXT GROUPBOX PUSHBUTTON ITEMBOX FILELISTBOX DROPLISTBOX SPINNER EDITBOX MULTILINEBOX REPORTVIEW
DC_PICTUREBITMAP=12 ; PICTURE PICTUREBUTTON
DC_TEXTCOLOR=13 ; RADIOBUTTON CHECKBOX VARYTEXT STATICTEXT GROUPBOX PUSHBUTTON ITEMBOX FILELISTBOX DROPLISTBOX SPINNER EDITBOX MULTILINEBOX REPORTVIEW
DC_ITEMBOXADD=14 ; ITEMBOX FILELISTBOX DROPLISTBOX REPORTVIEW
DC_ITEMBOXREMOVE=15 ; ITEMBOX FILELISTBOX DROPLISTBOX REPORTVIEW
DC_RADIOVALUE=16 ; RADIOBUTTON
DC_POSITION=17 ; ALL CONTROLS (Except MENUBAR and MENUITEM)
DC_MENUNAMES=18 ; ALL CONTROLS
DC_HANDLE=19 ; ALL CONTROLS (Except MENUBAR and MENUITEM)
DC_RVCOLHEAD=20 ; REPORTVIEW
DC_RVCOLWIDTH=21 ; REPORTVIEW
DC_RVADDCOL=22 ; REPORTVIEW
DC_RVREMOVECOL=23 ; REPORTVIEW
DC_RVMATCHCOL=24 ; REPORTVIEW
DC_RVCANCELEDIT=25 ; REPORTVIEW
DC_RVCHECKEDROWS=26 ; REPORTVIEW
DC_RVJUSTIFY=27 ; REPORTVIEW
;DialogObject constants
DLGOBJECT_ADDEVENT=1 ; Call dialog callback when the specified event occurs
DLGOBJECT_STOPEVENT=2 ; Stop calling dialog callback when an event previously requested with
DLGOBJECT_GETOBJECT=3 ; Return an object references to the specified control
DLGOBJECT_GETPICTURE=4 ; Create and return an object reference to a picture object
;Return code constants
RET_DO_CANCEL=0 ; Cancels dialog
RET_DO_DEFAULT= -1 ; Continue with default processing for control
RET_DO_NOT_EXIT= -2 ; Do not exit the dialog
return
#EndSubroutine
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InitDialogConstants() ; Initialize Dialog Constants (need only be done once usually)
#DefineSubroutine MyDialogCallbackProc(MyDialog_Handle,MyDialog_Message,MyDialog_Name,MyDialog_EventInfo,MyDialog_ChangeInfo)
ON_EQUAL = @TRUE ; Initialize variable ON_EQUAL
switch MyDialog_Message ; Switch based on Dialog Message type
case MSG_INIT ; Standard Initialization message
; DialogProcOptions(MyDialog_Handle,MSG_TIMER,1000)
; DialogProcOptions(MyDialog_Handle,MSG_BUTTONPUSHED,@TRUE)
DialogProcOptions(MyDialog_Handle,MSG_COMBOCHANGE,@TRUE)
hCombo = DialogControlGet(MyDialog_Handle,"DropListBox_1",19); get the windows handle of the DropList (Combo) control in the dialog
return(RET_DO_DEFAULT)
; case MSG_BUTTONPUSHED
; if MyDialog_Name == "PushButton_OK" ; OK
; return(RET_DO_DEFAULT)
; elseif MyDialog_Name == "PushButton_Cancel" ; Cancel
; return(RET_DO_DEFAULT)
; endif ; MyDialog_Name
; return(RET_DO_DEFAULT)
case MSG_COMBOCHANGE ; ID "DropListBox_1" dlVariable1
TotalItems = CBGet(hCombo,1);Call the UDF to get the total number of items in the Combo (DropList) Box control
SelectedItemIndex = CBGet(hCombo,0);Call the UDF to get the index of the selected item in the Combo control's list
SelectedItemText = DialogControlGet(MyDialog_Handle,"DropListBox_1",6)
Message("Returned result:","There are ":TotalItems:" items in the list.":@CR:"Item 0 (zero) is at the top, and you just selected the item with index number ":SelectedItemIndex:@CR:"which displays the text: ":SelectedItemText)
endswitch ; MyDialog_Message
return(RET_DO_DEFAULT)
#EndSubroutine ; End of Dialog Callback MyDialogCallbackProc
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MyDialogFormat=`WWWDLGED,6.2`
MyDialogCaption=`Use the droplist (Combo) box to select an item`
MyDialogX=100
MyDialogY=100
MyDialogWidth=180
MyDialogHeight=167
MyDialogNumControls=003
MyDialogProcedure=`MyDialogCallbackProc`
MyDialogFont=`DEFAULT`
MyDialogTextColor=`DEFAULT`
MyDialogBackground=`DEFAULT,DEFAULT`
MyDialogConfig=0
MyDialog001=`013,145,036,012,PUSHBUTTON,"PushButton_OK",DEFAULT,"OK",1,10,32,DEFAULT,DEFAULT,DEFAULT`
MyDialog002=`131,145,036,012,PUSHBUTTON,"PushButton_Cancel",DEFAULT,"Cancel",0,20,DEFAULT,DEFAULT,DEFAULT,DEFAULT`
MyDialog003=`013,019,148,118,DROPLISTBOX,"DropListBox_1",dlVariable1,DEFAULT,DEFAULT,30,DEFAULT,DEFAULT,DEFAULT,DEFAULT`
ButtonPushed=Dialog("MyDialog")