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The #1 FAQ question

• Why do my graphics keep disappearing?

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Images

• Creating and loading images

• Drawing Images

• Calculating best-fit drawing using a transform

• Convert color images to grayscale

• Changing resolution of or cropping images

• Saving JPEG images with a specific compression quality

• Creating animated GIF images

• Creating a negative image

• Image processing with GDI+ and .NET

• Modifying an image and writing it back to the same filename

• Converting RGB to 1 bit-per-pixel monochrome

• Transparent GIF images

• Discovering the Property Items present in an image

• Understanding the LockBits method and the BitmapData class

• Creating high-resolution images and text.

• Creating an optimized palette for GIF images

• Generating Multi-Frame TIFF image files.

• Adding frames to a Multi-Frame TIFF.

• Drawing on an existing image.

• Creating a high-quality thumbnail image.

Colour

• Using RGB and HSL in .NET

• Adjusting the Saturation of an image.

• Adjusting the contrast of an image.

• Finding the colour at a certain point. (eyedropper)

Text

• Drawing text with a drop-shadow

• Text effects. Emboss, Outline and Warp

• Drawing text at an angle

• Drawing text on a reversed Y axis

• Drawing text with a halo or aura

• Formatting text on a common baseline.

Drawing lines and shapes

• Drawing single pixel lines

• Plotting single pixels

• Drawing round rectangles

• Hit testing lines

Pens and Brushes

• Using the LinearGradientBrush

• Using the PathGradientBrush

• Scaling the TextureBrush

• Scaling the Pen object.

Paths

• Hit testing lines

• The Spirograph bug

Regions

• Extract a region from a bitmap

• GetRegionScans BUG

General GDI+ techniques

• When to dispose of resources

• Converting mouse coordinates to the current page units

• Understanding the LockBits method and the BitmapData class

• Comparing GDI Mapping Modes and GDI+ Transformations

GDI+ Miscellaneous questions and tips

• Why is GDI+ so slow?

• How (or how not) to use the PictureBox control.

• How do I manipulate the graphics on screen?

• How to capture the screen or an image of a control

• When to use CreateGraphics

• What are the limits of the drawing extents?