Shows the popup list of a combo box or drop-down list.
ControlShowDropDown ControlID , WinTitle, WinText, ExcludeTitle, ExcludeText
Type: String, Integer or Object
The control's ClassNN, text or HWND, or an object with a Hwnd property. For details, see Control Identifiers.
Type: String, Integer or Object
If each of these is blank or omitted, the Last Found Window will be used. Otherwise, specify for WinTitle a window title or other criteria to identify the target window and/or for WinText a substring from a single text element of the target window (as revealed by the included Window Spy utility).
ExcludeTitle and ExcludeText can be used to exclude one or more windows by their title or text. Their specification is similar to WinTitle and WinText, except that ExcludeTitle does not recognize any criteria other than the window title.
Window titles and text are case-sensitive. By default, hidden windows are not detected and hidden text elements are detected, unless changed with DetectHiddenWindows and DetectHiddenText. When using pure HWNDs, hidden windows are always detected. By default, a window title can contain WinTitle or ExcludeTitle anywhere inside it to be a match, unless changed with SetTitleMatchMode.
A TargetError is thrown if the window or control could not be found.
An OSError is thrown if a message could not be sent to the control.
This function works best with common or predefined Microsoft controls; some applications use custom or modified controls, in which case the function might not work as expected.
To improve reliability, a delay is done automatically after each use of this function. That delay can be changed via SetControlDelay or by assigning a value to A_ControlDelay. For details, see SetControlDelay remarks.
ControlHideDropDown, Control functions
Opens the Run dialog, shows its popup list for 2 seconds and closes the dialog.
Send "#r" ; Open the Run dialog.
WinWaitActive "ahk_class #32770" ; Wait for the dialog to appear.
ControlShowDropDown "ComboBox1" ; Show the popup list. The second parameter is omitted so that the last found window is used.
Sleep 2000
ControlHideDropDown "ComboBox1" ; Hide the popup list.
Sleep 1000
Send "{Esc}" ; Close the Run dialog.