Enable Ctrl+Backspace

[TetraTheta]

Enabling AutoComplete will also enable 'Delete Whole Word'(Ctrl+Backspace) feature as side-effect.

Source: https://stackoverflow.com/a/30269663

[zufuliu]

Related issue for Notepad4: zufuliu/notepad4#904 and zufuliu/notepad4@51fe97e
which use following code:

SHAutoComplete(hwnd, SHACF_FILESYS_ONLY | SHACF_AUTOAPPEND_FORCE_OFF | SHACF_AUTOSUGGEST_FORCE_OFF);

rough equivalent to following (?):

// .AutoCompleteMode = AutoCompleteMode.None; // default None
.AutoCompleteSource = AutoCompleteSource.FileSystem;

Same change could be applied to outer/top FindInFilesForm.Designer.cs.

[TetraTheta]

Setting .AutoCompleteMode to None will prevent Ctrl+Backspace side-effect in .NET Fw 4.8, which makes this PR useless.
I think AutoCompleteMode.Suggest is mandatory.

Calling Windows API directly to those controls might work, but ComboBox requires extra 'touch' to get handle of TextBox(or something similar) underlying of it, or SHAutoComplete won't work on it.
Here is AutoHotkey function that I use to enable Ctrl+Backspace to both type of controls.

EnableAutoCompleteOnComboBox(hCombo, option := 0x20000000) {
  CBEM_GETEDITCONTROL := 0x0407 ; WM_USER + 7
  hEdit := DllCall("SendMessageW", "ptr", hCombo, "uint", CBEM_GETEDITCONTROL, "ptr", 0, "ptr", 0, "ptr")
  if !hEdit
    hEdit := DllCall("FindWindowExW", "ptr", hCombo, "ptr", 0, "wstr", "Edit", "wstr", "", "ptr")

  if !hEdit
    return

  EnableAutoCompleteOnEdit(hEdit, option)
}

EnableAutoCompleteOnEdit(hEdit, option := 0x20000000) {
  ; https://devblogs.microsoft.com/oldnewthing/20071011-00/?p=24823
  ; https://learn.microsoft.com/en-us/windows/win32/api/shlwapi/nf-shlwapi-shautocomplete
  ; SHACF_AUTOSUGGEST_FORCE_OFF (0x20000000)
  ;   Ignore the registry default and force the AutoSuggest feature off.
  ;   This flag must be used in combination with one or more of the SHACF_FILESYS* or SHACF_URL* flags.
  ; AKA. It won't autocomplete anything, but it will allow functionality such as Ctrl+Backspace deleting a word.
  DllCall("ole32\CoInitialize", "uint", 0)
  DllCall("shlwapi\SHAutoComplete", "uint", hEdit, "uint", option)
  DllCall("ole32\CoUninitialize")
}

I'll update the PR to suggest FileSystem to comboBoxSearchPath. I don't think other controls needs any suggestion, at least from what I've understood.

[zufuliu]

Setting .AutoCompleteMode to None will prevent Ctrl+Backspace side-effect in .NET Fw 4.8, which makes this PR useless.
I think AutoCompleteMode.Suggest is mandatory.

OK, thanks for the clarify.

[zufuliu]

Same change could be applied to outer/top FindInFilesForm.Designer.cs.

Are going to add commits to apply similar change to:
https://github.com/zufuliu/FindInFiles/blob/main/FindInFilesForm.Designer.cs

[TetraTheta]

Done!
.NET WinForm part didn't show up as WinForm file, so I couldn't understand what you mean at the first time.

Is this what you've meant?

[zufuliu]

.NET WinForm part didn't show up as WinForm file, so I couldn't understand what you mean at the first time.

You need to install .NET SDK to view in designer.

[TetraTheta]

That's weird, because it is already installed.
I think that's a problem of my environment.

Anyway, I've modified WinForm Designer file for .NET too. Can you check it, please?

[zufuliu]

The changes are in effect.