`Cursor.Current` vs. `this.Cursor` in .NET: What's the Difference and When Should I Use Each?

Cursor.Current vs. this.Cursor in .Net

When working with cursors in .Net, there are two commonly used properties: Cursor.Current and this.Cursor. It's natural to wonder if there is any difference between these properties.

Cursor.Current vs. this.Cursor

• this.Cursor: This property represents the cursor for the specific WinForm control you are working with. By setting this.Cursor, you are changing the cursor shape for that specific control.
• Cursor.Current: This property represents the cursor for the entire application. By setting Cursor.Current, you are globally changing the cursor shape for all active forms and controls.

When to Use

• this.Cursor: Use this property when you want to change the cursor shape for a specific control, such as changing it to a hand cursor over a button.
• Cursor.Current: Use this property when you want to globally change the cursor shape for all forms and controls, such as displaying a wait cursor during a long-running operation.

Gotcha with Cursor.Current

As mentioned in the referenced code示例, setting Cursor.Current may not always result in the desired behavior. This is because the system sends the WM_SETCURSOR message to the window containing the mouse cursor, which can override the cursor shape set by Cursor.Current.

How to Display Hourglass Cursor Properly

To display an hourglass cursor correctly, you should use both Cursor.Current and Application.UseWaitCursor properties. You can also use a helper class like the HourGlass class provided in the referenced answer to simplify this process.

In summary, Cursor.Current changes the cursor shape globally, while this.Cursor changes it for a specific control. Use the appropriate property based on the scope of the cursor change you want to achieve.

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