WxProgressDialog

From WxWiki

[edit] Using wxProgressDialog without a gauge/progress bar

When creating a gaugeless progress dialog, use a value of 0 for the 'maximum' parameter.

Cancellable example, assuming (*this) is a wxWindow:

wxProgressDialog progressDlg(_("Please wait"), _("Scanning"),
	0, this, wxPD_APP_MODAL | wxPD_CAN_ABORT);

Call Update with a value of -1 (not 0) to check if Cancel button pressed:

if (!progressDlg.Update(-1)) // if cancel clicked
	return; // abort processing

Update can still be used to change the message of the dialog:

if (!progressDlg.Update(-1, "New message")) // if cancel clicked
	return; // abort processing