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- Drawing the arc of a circle in an Image control
Drawing the arc of a circle in an Image control The following code shows how to draw an arc in an Image control (IMG_ImageDrawing). Several edit controls (named EDT_X1, EDT_Y1, EDT_X2, EDT_Y2, EDT_X3, EDT_Y3, EDT_X4, EDT_Y4) allow the user to enter: - the coordinates of the rectangle in which the circle will be drawn,
- the coordinates of the start point and end point of the arc.
The user can select the color of the arc via a Radio Button control (RADIO_SelectColor) // Declare the variable
ArcColor is int
// Declare the drawing in the "IMG_ImageDrawing" control
dStartDrawing(IMG_ImageDrawing)
// Retrieve the selected color
SWITCH RADIO_SelectColor
CASE 1: ArcColor = LightRed
CASE 2: ArcColor = LightBlue
CASE 3: ArcColor = LightGreen
CASE 4: ArcColor = LightYellow
END
// Arc of the circle
dArc(EDT_X1, EDT_Y1, EDT_X2, EDT_Y2, EDT_X3, EDT_Y3, EDT_X4, EDT_Y4, ArcColor)
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