Time for an 2014 update…

Task/Bitmap/ActionScript/bitmap.as

@@ -0,0 +1,22 @@
+// To import the BitmapData class:
+import flash.display.BitmapData;
+
+// Creates a new BitmapData object with a width of 500 pixels and a height of 300 pixels.
+var bitmap:BitmapData = new BitmapData(500, 300);
+
+// Create a BitmapData with transparency disallowed
+var opaqueBitmap:BitmapData = new BitmapData(500, 300, false);
+
+// Bitmap with initial fill colour, as 0xAARRGGBB (default is white)
+var redFilledBitmap:BitmapData = new BitmapData(400, 300, true, 0xFFFF0000);
+
+// Get the colour value of the pixel at point (200, 200)
+bitmap.getPixel(200, 200)     // As 0xRRGGBB
+bitmap.getPixel32(200, 200)   // As 0xAARRGGBB
+
+// Set the colour value of the pixel at point (300, 200) to blue
+bitmap.setPixel(300, 200, 0x0000FF);       // As 0xRRGGBB
+bitmap.setPixel32(300, 200, 0xFF0000FF);   // As 0xAARRGGBB
+
+// Fill the bitmap with a given colour (as 0xAARRGGBB) after construction
+bitmap.fillRect(bitmap.rect, 0xFF44FF44);