You can draw in a number of different modes.
In the default mode, you draw directly to the control on screen.
startSetPixel - Start drawing on an OWNERDRAW
endSetPixel - Stop drawing
The buffer mode lets you draw off-screen without a control. Use this mode if you want to use these functions to draw to something other than a control and use getPixel to transfer information between the buffer and your target.
(startSetPixelBuffer)?- Start drawing in buffered mode
(endSetPixelBuffer)? - Stop drawing buffered mode. This destroys the buffer.
In SuperSampling mode, you draw at a scaled up resolution off-screen, after ending the result is scaled down and smoothed.
(startSetPixelSS)? - Start drawing in SuperSampling mode
(endSetPixelSS)? - Stop drawing SuperSampling mode
getSetPixelHeight - Returns the height of the control canvas or buffer in pixels. Only works between a startSetPixel* and endSetPixel* pair.
getSetPixelWidth - Returns the width of the control canvas or buffer in pixels. Only works between a startSetPixel* and endSetPixel* pair.
getPixel - Read single pixel
setPixel - Set single pixel
setFont - lets you choose the font name, its size, angle, boldness, and italics
setText - lets you draw a certain text with the chosen font, color and alignment
setTextv - Identical to setText but with support for formatted text.
setBitmap - Draw a specified bitmap on the current ownerdraw/buffer canvas at the specified coordinates.
setBitmapTransparent - Draw a bitmap on the current ownerdraw/buffer canvas with a transparent color.
setBitmapStretch - Draw a stretched or shrunk bitmap on the current ownerdraw/buffer canvas.
setBitmapTile - Draw part of the specified bitmap on the current ownerdraw/buffer canvas at the specified coordinates.
setBitmapStretchTransparent - Draw a stretched or shrunk bitmap on the current ownerdraw/buffer canvas with a transparent color.
setAngleArc - Draws the outlines of a pie segment of a circle.
setAngleArcFill - Draws a filled pie segment of a circle.
setEllipse - draws an ellipse
setEllipseFill - draws a filled ellipse
(setEndCaps)? - sets the method used to cap the ends of lines with the constants PS_ENDCAP_ROUND, PS_ENDCAP_SQUARE and PS_ENDCAP_FLAT.
setFill - fills the whole ownerdraw control with a certain color e.g. setFill(getCtlColor(n))
(setInsideFrame)? - determines whether the pen lines of shapes are drawn on the edge or inside the edge.
(setJoin)? - sets the method used to join thick lines at corners of shapes with the constants PS_JOIN_ROUND, PS_JOIN_BEVEL and PS_JOIN_MITER.
setLine - draws a line
setPenWidth - lets you change the broadness of drawn lines.
setRectangle - draws a rectangle
setRectFrame - draws a rectangle
setRectFill - draws a filled rectangle
setRectGradient - draws a gradient into the rectangle
If you only need these shapes or non-anti-aliased shapes, these functions will be both faster and better quality than using SuperSampling mode.
setThinLineAA - Draw anti-aliased line of one pixel width
setThinEllipseAA - draw anti-aliased lines and ellipses