GDI + Learning Record (21): Color

// Color transparency var G: tgpgraphics; SB: tgpsolidbrush; begin G: = tgpgraphics. create (canvas. handle); SB: = tgpsolidbrush. create (makecolor (128,255, 128); {indicates translucent} G. fillrectangle (SB, 10, 10, 100,100); sb. free; G. free; end;
 // Use the color type var G: tgpgraphics; SB: tgpsolidbrush; color: tgpcolor; {actually the color is DWORD type} begin G: = tgpgraphics. create (canvas. handle); color: = aclred; SB: = tgpsolidbrush. create (color); G. fillrectangle (SB, 10, 10, 100,100); sb. free; G. free; end;
 // Color mixing mode var G: tgpgraphics; P: tgppen; begin G: = tgpgraphics. create (canvas. handle); P: = tgppen. create (makecolor (128,255,), 20); G. setcompositingmode (compositingmodesourcecopy); {rewrite background color} G. drawline (p, 11, 11, 111,111); G. setcompositingmode (compositingmodesourceover); {mixed background color, default value} G. drawline (p, 66,11, 222,128); p. free; G. free; end;
 

Color Mixing Mode:

Delphi	Microsoft	Description
Compositingmodesourcecopy	Sourcecopy	Specifies that the background color is rewritten when the color is rendered.
Compositingmodesourceover	Sourceover	Specifies that the color is mixed with the background color when it is rendered. This mixture is composed Determine the Alpha component.

GDI + color constant:

Delphi	Microsoft	Description
Aclactiveborder	Activeborder	The System-defined color of the border of the activity window.
Aclactivecaption	Activecaption	The System-defined color of the background in the title bar of the activity window.
Aclactivecaptiontext	Activecaptiontext	The System-defined color of the text in the title bar of the activity window.
Aclaliceblue	Aliceblue
Aclantiquewhite	Antiquewhite
Aclappworkspace	Appworkspace	The System-defined color of the application workspace. The application workspace is an area not occupied by documents in the Multi-document view.
Aclaqua	Aqua
Aclaquamarine	Aquamarine
Aclazure	Azure
Aclbeige	Beige
Aclbisque	Bisque
Aclblack	Black
Aclblanchedalmond	Blanchedalmond
Aclblue	Blue
Aclblueviolet	Bluevilet
Aclbrown	Brown
Aclburlywood	Burlywood
Aclbuttonface	Buttonface	The system defines the surface color of 3D elements.
Aclbuttonhighlight	Buttonhighlight	The color defined by the system, which is the highlight color of three-dimensional elements. This color is applied to the area where 3D elements face light sources.
Aclbuttonshadow	Buttonshadow	The color defined by the system is the shadow color of three-dimensional elements. This color is applied to the back-to-source part of a 3D element.
Aclcadetblue	Cadetblue
Aclchartreuse	Chartreuse
Aclchocolate	Chocolate
Aclcontrol	Control	The system defines the surface color of 3D elements.
Aclcontroldark	Controldark	The system defines the shadow color of 3D elements. The shadow color is applied to the back-to-source of 3D elements.
Aclcontroldarkdark	Controldarkdark	The color defined by the system is the dark shadow color of three-dimensional elements. The dark shadow color is applied to the deepest part of 3D elements.
Aclcontrollight	Controllight	The color defined by the system is the light color of three-dimensional elements. The light color is applied to the light source of 3D elements.
Aclcontrollightlight	Controllightlight	The system defines the highlight color of a 3D element. The highlight color is applied to the brightest part of a 3D element.
Aclcontroltext	Controltext	The System-defined color of text in 3D elements.
Aclcoral	Coral
Aclcornflowerblue	Cornflowerblue
Aclcornsilk	Cornsilk
Aclcrimson	Crimson
Aclcyan	Cyan
Acldarkblue	Darkblue
Acldarkcyan	Darkcyan
Acldarkgoldenrod	Darkgoldenrod
Acldarkgray	Darkgray
Acldarkgreen	Darkgreen
Acldarkkhaki	Darkkhaki
Acldarkmagenta	Darkmagenta
Acldarkolivegreen	Darkolivegreen
Acldarkorange	Darkorange
Acldarkorchid	Darkorchid
Acldarkred	Darkred
Acldarksalmon	Darksalmon
Acldarkseagreen	Darkseagreen
Acldarkslateblue	Darkslateblue
Acldarkslategray	Darkslategray
Acldarkturquoise	Darkturquoise
Acldarkviolet	Darkviotlet
Acldeeppink	Deeppink
Acldeepskyblue	Deepskyblue
Acldesktop	Desktop	The System-defined color of the desktop.
Acldimgray	Dimgray
Acldodgerblue	Dodgerblue
Aclfirebrick	Firebrick
Aclfloralwhite	Floralwhite
Aclforestgreen	Forestgreen
Aclfuchsia	Fuchsia
Aclgainsboro	Gainsboro
Aclghostwhite	Ghostwhite
Aclgold	Gold
Aclgoldenrod	Goldenrod
Aclgradientactivecaption	Gradientactivecaption	The System-defined color that is the brightest in the color gradient in the title bar of the activity window.
Aclgradientinactivecaption	Gradientinactivecaption	The System-defined color that is the brightest in the color gradient in the title bar of the inactive window.
Aclgray	Gray
Aclgraytext	Graytext	The System-defined color of light gray text. Items in the list are displayed in light gray text.
Aclgreen	Green
Aclgreenyellow	Greenyellow
Aclhighlight	Highlight	The System-defined color of the selected background. The selected items include the selected menu items and selected text.
Aclhighlighttext	Highlighttext	The System-defined color of the selected item text.
Aclhoneydew	Honeydew
Aclhotpink	Hotpink
Aclhottrack	Hottrack	The System-defined color used to specify the hot tracking item. Click a hot tracking item to execute this item.
Aclinactiveborder	Inactiveborder	The System-defined color of the inactive window border.
Aclinactivecaption	Inactivecaption	The System-defined color of the background of the inactive window title bar.
Aclinactivecaptiontext	Inactivecaptiontext	The System-defined color of the text in the title bar of the inactive window.
Aclindianred	Indianred
Aclindigo	Indigo
Aclinfo	Info	The System-defined color of the tooltip background.
Aclinfotext	Infotext	The System-defined color of the tooltip text.
Aclivory	Ivory
Aclkhaki	Khaki
Acllavender	Lavender
Acllavenderblush	Lavenderblush
Acllawngreen	Lawngreen
Acllemonchiffon	Lemonchiffon
Acllightblue	Lightblue
Acllightcoral	Lightcoral
Acllightcyan	Lightcyan
Acllightgoldenrodyellow	Lightgoldenrodyellow
Acllightgray	Lightgray
Acllightgreen	Lightgreen
Acllightpink	Lightpink
Acllightsalmon	Lightsalmon
Acllightseagreen	Lightseagreen
Acllightskyblue	Lightskyblue
Acllightslategray	Lightslategray
Acllightsteelblue	Lightsteelblue
Acllightyellow	Lightyellow
Acllime	Lime
Acllimegreen	Limegreen
Acllinen	Linen
Aclmagenta	Magenta
Aclmaroon	Maroon
Aclmediumaquamarine	Mediumaquamarine
Aclmediumblue	Mediumblue
Aclmediumorchid	Mediumorchid
Aclmediumpurple	Mediumpurple
Aclmediumseagreen	Mediumseagreen
Aclmediumslateblue	Mediumslateblue
Aclmediumspringgreen	Mediumspringgreen
Aclmediumturquoise	Mediumturquoise
Aclmediumvioletred	Mediumvioletred
Aclmenu	Menu	The System-defined color of the menu background.
Aclmenubar	Menubar	The System-defined color of the menu bar background.
Aclmenuhighlight	Menuhighlight	When a menu is displayed, the System-defined color of the menu item is highlighted.
Aclmenutext	Menutext	The System-defined color of the menu text.
Aclmidnightblue	Midnightblue
Aclmintcream	Mintcream
Aclmistyrose	Mistyrose
Aclmoccasin	Moccasin
Aclnavajowhite	Navajowhite
Aclnavy	Navy
Aclold.pdf	Oldlace
Aclolive	Olive
Aclolivedrab	Olivedrab
Aclorange	Orange
Aclorangered	Orangered
Aclorchid	Orchid
Aclpalegoldenrod	Palegoldenrod
Aclpalegreen	Palegreen
Aclpaleturquoise	Paleturquoise
Aclpalevioletred	Palevioletred
Aclpapayawhip	Papayawhip
Aclpeachpuff	Peachpuff
Aclperu	Peru
Aclpink	Pink
Aclplum	Plum
Aclpowderblue	Powderblue
Aclpurple	Purple
Aclred	Red
Aclrosybrown	Rosybrown
Aclroyalblue	Royalblue
Aclsaddlebrown	Saddlebrown
Aclsalmon	Salmon
Aclsandybrown	Sandybrown
Aclscrollbar	Scrollbar	The System-defined color of the scroll bar background.
Aclseagreen	Seagreen
Aclseashell	Seashell
Aclsienna	Sienna
Aclsilver	Silver
Aclskyblue	Skyblue
Aclslateblue	Slateblue
Aclslategray	Slategray
Aclsnow	Snow
Aclspringgreen	Springgreen
Aclsteelblue	Steelblue
Acltan	Tan
Aclteal	Teal
Aclthistle	Thistle
Acltomato	Tomato
Acltransparent	Transparent
Aclturquoise	Turquoise
Aclviolet	Viotlet
Aclwheat	Wheat
Aclwhite	White
Aclwhitesmoke	Whitesmoke
Aclwindow	Window	The System-defined color of the background in the work area of the window.
Aclwindowframe	Windowframe	The System-defined color of the window frame.
Aclwindowtext	Windowtext	The System-defined color of the text in the workspace of the window.
Aclyellow	Yellow
Aclyellowgreen	Yellowgreen