UIElement.PreviewKeyDown Event
Definition
Important
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public:
virtual event KeyEventHandler ^ PreviewKeyDown;// Register
event_token PreviewKeyDown(KeyEventHandler const& handler) const;
// Revoke with event_token
void PreviewKeyDown(event_token const* cookie) const;
// Revoke with event_revoker
UIElement::PreviewKeyDown_revoker PreviewKeyDown(auto_revoke_t, KeyEventHandler const& handler) const;public event KeyEventHandler PreviewKeyDown;function onPreviewKeyDown(eventArgs) { /* Your code */ }
uIElement.addEventListener("previewkeydown", onPreviewKeyDown);
uIElement.removeEventListener("previewkeydown", onPreviewKeyDown);
- or -
uIElement.onpreviewkeydown = onPreviewKeyDown;Public Custom Event PreviewKeyDown As KeyEventHandler