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Step 13 Click on the Blocks button in the top-right corner to switch to the Blocks Editor.

Step 14 Click on the Button1 block from the Blocks palette to open its blocks.

Step 15 Drag the when Button1.Click block to the workspace.

Step 16 Click on the Canvas1 block from the Blocks palette to open its blocks.
Step 17 Drag the set Canvas1.PaintColor to block and place it inside the when Button1.Click

block.

Step 18 Click on the Colors block from the Blocks palette to open its blocks.
Step 19 Drag the red colour block and connect it to the set Canvas1.PaintColor block.

Similarly, add the given blocks to change the paint colour on the Canvas: when
Button2.Click, set Canvas1.PaintColor to blue; and when Button3.Click, set Canvas1.

PaintColor to green.
Step 20 Click on the Button4 block from the Blocks palette to open its blocks.

Step 21 Drag the when Button4.Click block to the workspace.

Step 22 Click on the Canvas1 block from the Blocks palette to open its blocks.

Step 23 Drag the call Canvas1.Clear block and place it inside the when Button4.Click block.

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Step 24 Click on the Canvas1 block from the Blocks palette to open its blocks.

Step 25 Drag the block when Canvas1.Dragged to the workspace.
Step 26 Drag the call Canvas1.DrawLine block and place it inside the when Canvas1.Dragged
block.

Step 27 Hover the mouse over prevX, select get prevX and connect it to x1 in the DrawLine

block.
Step 28 Hover the mouse over prevY, select get prevY and connect it to y1.

Step 29 Hover the mouse over currentX, select get currentX and connect it to x2.

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Premium Edition-VI