Articles:

• Delphi Command line tool to change Screen Resolution (21056)
• How do I create an icon from a bitmap? (18585)
• Converting a group of images from a TImageList into one single bitmap (14343)
• Change the desktop's icon and screensaver (14229)
• Scroll my control without flicker effect (14117)
• How to flip a bitmap image (13992)
• Dynamically drawing a transparent bitmap (13784)
• How to use an animated cursor to your application (13560)
• Combobox with colors (13485)
• Screen capture into a BMP file (13199)
• Retrieve list of installed fonts (13092)
• TDesktopCanvas - write on the desktop (13073)
• Load a bitmap and palette from a resource file (13027)
• TPicture and non-standard image file name extensions (13010)
• TNCCanvas - write on a form's non-client area (12763)
• Set the wallpaper with your application in Win32 (12305)
• How to add bitmaps to a menu? (12266)
• Components icons get messed up - Option 2 (12178)
• Display text diagonally (12059)
• Complicated drawing in background (12019)
• Extracting both the small and the large icon from a file (11933)
• Display text in any angle (11870)
• How many colors can the graphic card display? (11844)
• How to find out if the taskbar's auto hide feature is on (11577)
• Save a web page from TWebBrowser as a JPEG file (8908)
• Printing a TCanvas image with TPrinter (6074)
• Paint a moving progress bar using a background thread (6020)
• How to render a TRichEdit text onto a canvas (TImage) (4988)
• Highlighting HTML-Tags in TRichEdit (4611)
• Is a point inside a given polygon? (4421)
• Reading properties from a bitmap file (*.bmp) (3164)
• Join two *.wmf files together - adding one to the end of the other (2746)
• GIF support in Delphi (2642)
• GIF / PNG / JPEG lightweight Image Control (2636)
• Convert text to a GIF image (2499)
• How to make a screenshot of the view of a TWebBrowser (2471)
• 256 color tray icon does not display in the tray (1841)
• Creating icons with more than 16 colors (1741)

Dynamically drawing a transparent bitmap 1) use TBitmap do draw on the canvas, this makes it really easy 2) set it to transparent 3) define the transparent color (if you forget this, the color of the pixel in the bottom left corner will be used): var myBitmap : TBitmap; //.. begin // somehow create myBitmap myBitmap.Transparent := true; myBitmap.TransparentColor := clBlack; end;