The following example shows how to draw an image in ColdFusion and use it as a watermark. You use the ImageSetDrawingStroke function to define the attributes of lines and shapes you create with drawing functions and the ImageSetDrawingColor function to define the color.

<!--- This example shows how to draw a red circle with a line through it and use it as a
    watermark. --->
<!--- Use the ImageNew function to create a ColdFusion image that is 201x201 pixels. --->
<cfset myImage=ImageNew("",201,201)>
<!--- Set the drawing transparency of the image to 30%. --->
<cfset ImageSetDrawingTransparency(myImage,30)>
<!--- Set the drawing color to red. --->
<cfset ImageSetDrawingColor(myImage,"red")>
<!--- Create an attribute collection that sets the line width to 10 pixels. --->
    <cfset attr=StructNew()>
    <cfset attr.width = 10>
<!--- Apply the attribute collection to the ImageSetDrawingStroke function. --->
    <cfset ImageSetDrawingStroke(myImage,attr)>
<!--- Draw a diagonal line starting at (40,40) and ending at (165,165) on myImage. The drawing
    attributes you specified are applied to the line. --->
    <cfset ImageDrawLine(myImage,40,40,165,165)>
<!--- Draw a circle starting at (5,5) and is 190 pixels high and 190 pixels wide. The drawing
    attributes you specified are applied to the oval. --->
<cfset ImageDrawOval(myImage,5,5,190,190)>
<!--- Create a ColdFusion image from a JPEG file. --->
<cfimage source="../cfdocs/images/artgallery/raquel05.jpg" name="myImage2">
<!--- Scale the image to fit in a 200-pixel square, maintaining the aspect ratio of the
    source image. --->
<cfset ImageScaleToFit(myImage2,200,200)>
<!--- Paste the myImage2 directly over the myImage. --->
<cfset ImagePaste(myImage,myImage2,0,0)>
<!--- Save the combined image to a file. --->
<cfimage source="#myImage#" action="write" destination="test_watermark.jpg" overwrite="yes">
<!--- Display the image in a browser. --->
<img src="test_watermark.jpg"/>