Delphi UÅ̲åÈ벦³ö¼ì²â
Delphi UÅ̲åÈ벦³ö¼ì²â£º
1¡¢Ð½¨¹¤³Ì£»
2¡¢ÔÚform1ÉÏ·ÅÒ»¸öLabel£»
3¡¢¶¨ÒåÒ»¸ö˽Óйý³Ì
procedure WMDeviceChange(var Msg: TMessage); message WM_DEVICECHANGE;
ÍêÕû´úÂëÈçÏ£º
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, AppEvnts, ExtCtrls, StdCtrls;
type
TForm1 = class(TForm)
Label1: TLabel;
private
{ Private declarations }
procedure WMDeviceChange(var Msg: TMessage); message WM_DEVICECHANGE;
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.WMDeviceChange (var Msg: TMessage);
var
myMsg : String;
begin
Case Msg.WParam of
32768:
begin
myMsg :='UÅ̲åÈë';
Label1.Caption:=myMsg
end;
32772:
begin
myMsg :='UÅ̰γö';
Label1.Caption:=myMsg;
end;
end;
end;
end.
Ïà¹ØÎĵµ£º
1.¸ù¾Ý Delphi Ö¸Áî²Î¿¼ÊÖ²áÖÐ
˵Ã÷£º
Assigned º¯Ê½ÔÚ²ÎÊý²»Îªnilʱ´«»ØTrue,±íʾָÕëÒѾָµ½Ä³¸öÄÚ´æµØÖ·£¬Õâ¸öÄÚ´æµØÖ·¿ÉÄÜÊÇÒ»¸ö¶ÔÏóµØÊ×µØÖ·£¬Ò²¿ÉÄÜÔÚº¯Êý»ò¹ý³ÌÖУ¬ÉùÃ÷Ò»¸öÖ¸Õë±äÁ¿£¬Ã»Óи³ÖµÎªnil £¬ÎÞÂÒµÄÖ¸Ïòij´¦£¬ÕâÁ½¸öÖÖÇé¿ö£¬Assigned£¨Ö¸Õë±äÁ¿£©¶¼²»Îªnil , º¯Êý·Å»ØTrue£»
¶ø²ÎÊýΪnilʱÔò´«»ØFals ......
²Î¿¼×ÊÁÏ
“dz̸Object PascalµÄÖ¸Õë”
“Delphi Ö¸ÕëÈëÃÅ”
»ù±¾ÖªÊ¶
Ö¸Õë
Ö¸ÕëÊÇÒ»¸öÌØÊâµÄ±äÁ¿£¬ËüÀïÃæ´æ´¢µÄÊýÖµ±»½âÊͳÉΪÄÚ´æÀïµÄÒ»¸öµØÖ·¡£
×¢Ò⣺
£¨1£©¡¢Ö¸Õë¶ÔÓ¦×ÅÒ»¸öÊý¾ÝÔÚÄÚ´æÖеĵØÖ·£¬µÃµ½ÁËÖ¸Õë¾Í¿ÉÒÔ×ÔÓɵØÐ޸ĸÃÊý¾Ý¡£
£¨2£©¡¢Ò»¸öÖ¸Õë±äÁ¿½ö½öÊÇ´æ´¢Ò ......
¸½¼þ×ÊÁÏ
*Ö¸ÕëµÄʹÓ㨴úÂ룩
ʾÀý£º¼òµ¥µÄÖ¸ÕëÓ¦ÓÃ
´úÂ룺
procedure TForm1.Button2Click(Sender: TObject);
var
a: Integer;
p: ^Integer;
begin
with self.Memo1.Lines do
begin
......
¹ØÓÚÊéÇ©(BookMark)²Ù×÷£»
ÊéÇ©²Ù×÷Ö÷ÒªÓÃÓÚÔÚ±íÖпìËٵض¨Î»¼Ç¼ָÕ룬ÔÚÓ¦ÓóÌÐòÖг£³£Òª±£´æ¼Ç¼ָÕëËùÔÚµÄλÖã¬ÔÚ½øÐÐÆäËû´¦ÀíÖ®ºó£¬Ï£ÍûÄÜ¿ìËٵطµ»Øµ½ÏÈǰָÕëËùÔÚµÄλÖ㬴Ëʱ£¬Ê¹ÓÃÊéÇ©½«ÏÔµÃÌØ±ðÓÐÓá£ÓйØÊéÇ©²Ù×÷£¬DelphiÌṩÁËÈý¸ö·½·¨£¬ËüÃÇÊÇ£º
¡ñ&n ......
ÔÚ Delphi ÓïÑÔµÄÊý¾Ý¿â±à³ÌÖУ¬DBGrid ÊÇÏÔʾÊý¾ÝµÄÖ÷ÒªÊÖ¶ÎÖ®Ò»¡£µ«ÊÇ DBGrid ȱʡµÄÍâ¹ÛδÃâÏԵõ¥µ÷ºÍȱ·¦´´Òâ¡£Æäʵ£¬ÎÒÃÇÍêÈ«¿ÉÒÔÔÚÎÒÃǵijÌÐòÖÐͨ¹ý±à³ÌÀ´´ïµ½ÃÀ»¯DBGrid Íâ¹ÛµÄÄ¿µÄ¡£Í¨¹ý±à³Ì£¬ÎÒÃÇ¿ÉÒԸıä DBGrid µÄ±íÍ·¡¢Íø¸ñ¡¢Íø¸ñÏßµÄǰ¾°É«ºÍ±³¾°É«£¬ÒÔ¼°Ïà¹ØµÄ×ÖÌåµÄ´óСºÍ·ç¸ñ¡£
......