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// Display the Metafile file var G: tgpgraphics; IMG: tgpimage; begin G: = tgpgraphics. create (canvas. handle); IMG: = tgpimage. create ('C: \ temp \ x. emf'); {the file must exist} G. drawimage (IMG, 11, 11); IMG. free; G. free; end; // Draw the

Problem Source: http://www.cnblogs.com/del/archive/2008/07/30/1039045.html#1272783 In the compiler's opinion, the overloaded functions are basically different functions, of course there will be different function addresses; the addresses we

In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls, extctrls; Type tform1 = Class (tform) Panel1: tpanel; button1: tbutton; button2:

In this example: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs; Type tform1 = Class (tform) Procedure formpaint (Sender: tobject); end; vaR form1: tform1; implementation {$ R *.

Problem Source: http://www.cnblogs.com/del/archive/2008/05/29/1005631.html#1212654 First, this problem may not exist when it reaches Delphi 2008, because tstrings certainly supports Unicode at that time; the current version is 2007.

// Declaration: windowfrompoint (point: tpoint): hwnd; // Example: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls, extctrls; Type tform1 = Class (tform) button1: tbutton;

In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls, comctrls, extctrls; Type tform1 = Class (tform) button1: tbutton; trackbar1:

Problem Source: http://www.cnblogs.com/del/archive/2008/09/03/989467.html#1306651 Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs; Type tform1 = Class (tform) Procedure formcreate

In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, percentages, stdctrls, extctrls; Type tform1 = Class (tform) colorlistbox1: tcolorlistbox;

// Draw and fill the path var G: tgpgraphics; Path: tgpgraphicspath; P: tgppen; SB: tgpsolidbrush; begin G: = tgpgraphics. create (canvas. handle); P: = tgppen. create (makecolor (128,255,), 4); SB: = tgpsolidbrush. create (makecolor (128,255,255, 0)

// Enhance the header file structure of the Metafile tenhmetaheader: tagenhmetaheader = packed record itype: DWORD; {record type} nsize: DWORD; {structure size} rclbounds: trect; {external rectangle (in pixels)} rclframe: trect; {image rectangle (in

Problem Source: http://www.cnblogs.com/del/archive/2008/06/04/1101970.html#1217512 Stringofchar is a function that repeats "character" into "string; Dupestring is a function that repeats "string" into "New String; Stringofchar comes from

In the start mode window, the current window will receive a message for wm_cancelmode. No parameter is set for the message to be changed. In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils,

In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls, spin, extctrls; Type tform1 = Class (tform) Panel1: tpanel; label1: tlabel; label2

In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) memo1: tmemo; button1: tbutton; procedure

In this example: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) button1: tbutton; button2: tbutton; procedure alert (Sender: tobject);

Use application. onmessage to respond to a message: Unit unit1; interfaceuses windows, messages, extensions, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) memo1: tmemo; Procedure formcreate

Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) button1: tbutton; button2: tbutton; button3: tbutton; button4: tbutton; Procedure submit (Sender:

In this example: Code file: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs; Type tform1 = Class (tform) Procedure formmousedown (Sender: tobject; button: tmousebutton; shift:

Tgptexturebrush. Create (image: tgpimage; {image used for image painting} wrapmode: twrapmode = wrapmodetile {tile style, which is an optional value, as shown in the table below }); In this example: Code file: unit Unit1;interfaceuses Windows,