Cursor.Current vs. this.Cursor: When to Use Which in WinForms?

Cursor.Current vs. this.Cursor: Delving into Their Differences

In .NET, determining the cursor's appearance can be achieved through two primary properties: Cursor.Current and this.Cursor (where "this" represents a WinForm). While both offer ways to modify the cursor shape, they present distinct functionalities.

Cursor.Current

Cursor.Current directly overwrites the current cursor shape, regardless of any underlying control's settings. However, this change is temporary and will likely revert back to the default setting once the user interacts with the mouse (e.g., moving it).

this.Cursor

this.Cursor, on the other hand, sets the cursor shape for the specific WinForm instance. This change persists unless explicitly overridden by other events or settings. It utilizes the WM_SETCURSOR message to relay cursor changes to the system.

Differences in Usage

The primary distinction between these two properties lies in their intended usage. Cursor.Current is typically employed in short-lived scenarios, such as briefly displaying the "Wait Cursor" while performing an operation. this.Cursor, however, is suited for scenarios where the cursor shape needs to be modified throughout the lifetime of a WinForm (e.g., changing the cursor to an I-beam when hovering over a text box).

Conclusion

Understanding the difference between Cursor.Current and this.Cursor is crucial for effectively controlling the cursor's appearance in your applications. CodeRush's use of Cursor.Current is appropriate for situations requiring temporary cursor modifications, while using this.Cursor remains the preferred choice for long-term or specific cursor shape settings within WinForms.

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