wailsapp/wails · error

use GetResults for open multiple files dialog

Error message

use GetResults for open multiple files dialog

What it means

The v3 copy of go-common-file-dialog: GetResult() (singular) panics on multi-select dialogs because the underlying single-result COM call cannot return the user's multiple picks. Callers who split Show() and result retrieval must pick the accessor matching the dialog mode.

Source

Thrown at v3/internal/go-common-file-dialog/cfd/iFileOpenDialog.go:87

	}
	if err := fileOpenDialog.Show(); err != nil {
		return nil, err
	}
	return fileOpenDialog.GetResults()
}

func (fileOpenDialog *iFileOpenDialog) SetTitle(title string) error {
	return fileOpenDialog.vtbl.setTitle(unsafe.Pointer(fileOpenDialog), title)
}

func (fileOpenDialog *iFileOpenDialog) GetResult() (string, error) {
	isMultiselect, err := fileOpenDialog.isMultiselect()
	if err != nil {
		return "", err
	}
	if isMultiselect {
		// We should panic as this error is caused by the developer using the library
		panic("use GetResults for open multiple files dialog")
	}
	return fileOpenDialog.vtbl.getResultString(unsafe.Pointer(fileOpenDialog))
}

func (fileOpenDialog *iFileOpenDialog) Release() error {
	return fileOpenDialog.vtbl.release(unsafe.Pointer(fileOpenDialog))
}

func (fileOpenDialog *iFileOpenDialog) SetDefaultFolder(defaultFolderPath string) error {
	return fileOpenDialog.vtbl.setDefaultFolder(unsafe.Pointer(fileOpenDialog), defaultFolderPath)
}

func (fileOpenDialog *iFileOpenDialog) SetFolder(defaultFolderPath string) error {
	return fileOpenDialog.vtbl.setFolder(unsafe.Pointer(fileOpenDialog), defaultFolderPath)
}

func (fileOpenDialog *iFileOpenDialog) SetFileFilters(filter []FileFilter) error {
	return fileOpenDialog.vtbl.setFileTypes(unsafe.Pointer(fileOpenDialog), filter)

View on GitHub (pinned to 0e754b1b40)

Solutions

1. Call GetResults() (plural) after Show() on multi-select dialogs
2. Or simply use ShowAndGetResults() which pairs correctly by construction

Example fix

// before
_ = dialog.Show()
path, err := dialog.GetResult() // multiselect: panics

// after
_ = dialog.Show()
paths, err := dialog.GetResults()

// after manual Show(), match accessor to mode
if multi {
    paths, err := dialog.GetResults()
} else {
    path, err := dialog.GetResult()
}

var _ cfd.MultiFileDialog = dialog
paths, err := dialog.GetResults()

When it happens

Trigger: Calling dialog.Show() manually and then GetResult() on a multiselect-enabled dialog.

Common situations: Custom dialog lifecycles (show, poll, then fetch results) that were first written for single-select and reused for multi-select.

Related errors

• use ShowAndGetResults for open multiple files dialog
• use ShowAndGetResult for open single file dialog
• use GetResult for open single file dialog
• use ShowAndGetResults for open multiple files dialog
• use ShowAndGetResult for open single file dialog

AI-assisted analysis of wailsapp/wails@0e754b1b40 (2026-08-15). Data as JSON: /api/errors/8c9b05eca606bf0a. Report an issue: GitHub.