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Bitblt (destdc: HDC; {Target DC} X, Y, width, height: integer; {target location and size} srcdc: HDC; {source DC} xsrc, ysrc: integer; {source start position} drop: DWORD {grating operation code, that is, the method of mixing the source pixel with

Problem Source: http://www.cnblogs.com/del/archive/2008/07/02/1202871.html#1242042 In this example: CodeFile: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type

Problem Source: http://www.cnblogs.com/del/archive/2008/08/02/1022539.html#1275599 This example is modified on the basis of this example: http://www.cnblogs.com/del/archive/2008/01/01/1022539.html In this example: Code

Unit unit1; interfaceuses classes, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) button1: tbutton; Procedure button1click (Sender: tobject); end; tbase = Class procedure proc1; virtual; Procedure proc2; end; tchild = Class (tbase)

This is the previous content. Http://www.cnblogs.com/del/archive/2008/06/06/1215319.htmlStart! Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs; Type tform1 = Class (tform) Procedure

Unit unit1; interfaceuses windows, messages, extensions, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) button1: tbutton; Procedure formcreate (Sender: tobject); Procedure button1click (Sender: tobject);

This example also contains some usage of the topenpicturedialog control. Code File: unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, extdlgs, stdctrls; type tform1 = Class (

This example demonstrates global exception capture and handling, and simulates and inspires an exception. After compilation, run the generated Program File... In this example: Code File: Unit unit1; interfaceuses windows,

Findwindow (lpclassname, {Class Name of the window} lpwindowname: pchar {Title of the window}): hwnd; {handle of the returned window; returns 0} // find1_wex, which has two more handle parameters than findwindow: find1_wex (parent: hwnd; {the parent

Create an EMF file and draw it in the form. Unit unit1; interfaceuses windows, messages, extensions, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) button1: tbutton; Procedure button1click (Sender:

Similar functions: scaleappswextex and scaleviewportextex In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, comctrls, stdctrls; Type

Related functions: offsetviewportorgex In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls, comctrls, extctrls; Type tform1 =

Problem Source: http://www.cnblogs.com/del/archive/2008/07/10/1239621.html#1250359 CodeFile: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 =

Offsetcliprgn: Move the cut area; ptvisible: determines whether the point is in the cut area. In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms,

Problem Source: http://www.cnblogs.com/del/archive/2008/07/30/1255869.html#1272342 In this example: Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs,

Problem Source: http://www.cnblogs.com/del/archive/2008/06/14/1221980.html#1225922 // In this way, the close button of the current window will be grayed out, but there will be a redundant line var H: hmenu; begin H: = getsystemmenu (handle,

Problem Source: http://www.cnblogs.com/del/archive/2008/06/14/1218771.html#1225859 Code File: Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs; Type tform1 = Class (tform)

The reason for complexity is that it differs from the previously mentioned structured file access. Such complex structured files are also called "Composite documents ". Some documents are not structured, such as NotePad files. Structured files

Enumenhmetafile (DC: HDC; {target device handle; if the callback function does not require playback, this parameter is 0} EMF: henhmetafile; {metadata file handle} enhmetafunc: tfnenhmfenumproc; {callback function pointer; For the callback function

The core difficulty of Boyou Peng's letter on hook is how to transmit the data in DLL, which will be discussed in the following two examples. In this example, a global mouse hook is created, and the mouse information is passed to the program that