在程序运行时如何实现拖动、调整控件的大小, 在程序运行时如何实现拖动、调整控件的大小,有控件吗?[email protected][email protected](如果解决连同以前的200分一起送上) 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 一段程序:unit SizerControl;interfaceuses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;type TSizerControl = class(TCustomControl) private FControl: TControl; FRectList: Array [1..8] of TRect; FPosList: Array [1..8] of Integer; { Private declarations } protected { Protected declarations } public constructor Create(AOwner: TComponent; AControl: TControl); procedure CreateParams(var Params: TCreateParams); override; procedure Createhandle;override; procedure WmNcHitTest(var Msg: TWmNcHitTest); message wm_NcHitTest; procedure WmSize(var Msg:TWmSize); message wm_Size; procedure WmLButtonDown(var Msg: TWmLButtonDown); message wm_LButtonDown; procedure WmMove(var Msg: TWmMove); message Wm_Move; procedure Paint; override; procedure SizeControlExit(Sender: TObject); { Public declarations } published { Published declarations } end;const sc_DragMove: Longint = $F012;procedure Register;implementationconstructor TSizerControl.Create(AOwner: TComponent; AControl: TControl);var R: TRect;begin inherited Create(AOwner); FControl := AControl; OnExit := SizeControlExit; R := FControl.BoundsRect; InflateRect(R, 2, 2); BoundsRect := R; Parent := FControl.Parent; FPosList[1] := htTopLeft; FPosList[2] := htTop; FPosList[3] := htTopRight; FPosList[4] := htRight; FPosList[5] := htBottomRight; FPosList[6] := htBottom; FPosList[7] := htBottomLeft; FPosList[8] := htLeft;end;procedure TSizerControl.CreateParams(var Params: TCreateParams);begin inherited CreateParams(Params); //增加透明特性 Params.ExStyle := Params.ExStyle + WS_EX_TRANSPARENT;end;procedure TSizerControl.Createhandle;begin inherited Createhandle; SetFocus;end;procedure TSizerControl.WmNcHitTest(var Msg: TWmNcHitTest);var Pt: TPoint; I: Integer;begin Pt := Point(Msg.XPos, Msg.YPos); Pt := ScreenToClient(Pt); Msg.Result := 0; //检测鼠标位置并改变状态 for I := 1 to 8 do if PtInRect(FRectList[I], Pt) then Msg.Result := FPosList[I]; if Msg.Result = 0 then inherited;end;procedure TSizerControl.WmSize(var Msg:TWmSize);var R: TRect;begin R := BoundsRect; InflateRect( R, -2, -2); FControl.BoundsRect := R; //计算8个黑方框 FRectList[1] := Rect(0 ,0, 5, 5); FRectList[2] := Rect(Width div 2 - 3, 0, Width div 2 + 2, 5); FRectList[3] := Rect(Width - 5, 0, Width, 5); FRectList[4] := Rect(Width - 5, height div 2 - 3, Width, Height div 2 + 2); FRectList[5] := Rect(Width - 5, Height - 5, Width, Height); FRectList[6] := Rect(Width div 2 - 3, Height - 5, Width div 2 + 2, Height); FRectList[7] := Rect(0, Height -5, 5, Height); FRectList[8] := Rect(0, Height div 2 - 3, 5, Height div 2 + 2);end;procedure TSizerControl.WmLButtonDown(var Msg: TWmLButtonDown);begin //执行拖动命令 Perform(Wm_SysCommand, sc_DragMove, 0);end;procedure TSizerControl.WmMove(var Msg: TWmMove);var R: TRect;begin R := BoundsRect; InflateRect( R, -2, -2); FControl.Invalidate; FControl.BoundsRect := R;end;procedure TSizerControl.Paint;var I: Integer;begin Canvas.Brush.Color := clBlack; for I := 1 to 8 do with FRectList[I] do Canvas.Rectangle (Left, Top, Right, Bottom);end;procedure TSizerControl.SizeControlExit(Sender: TObject);begin Free;end;procedure Register;begin RegisterNoicon([TSizerControl]);end;end主窗口程序:unit Unit1;interfaceuses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls;type TForm1 = class(TForm) btn: TButton; GroupBox1: TGroupBox; procedure btnMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); procedure GroupBox1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); private { Private declarations } public { Public declarations } end;var Form1: TForm1;implementationuses SizerControl;{$R *.DFM}procedure TForm1.btnMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);var SizeControl: TSizerControl;begin SizeControl := TSizerControl.Create(self, btn);end;procedure TForm1.GroupBox1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);var SizeControl: TSizerControl;begin SizeControl := TSizerControl.Create(self, GroupBox1);end;end. to: cg1120(代码最优化-§雪是冷的,人是暖的§) 有第三方组件吗?我的Email: [email protected] [email protected] 控件数组布局 超簡單的fastreport問題~ 关于VB不懂的代码(如何转换成DELPHI中代码),求解 DLL里封装WSDL接口的错误 又来求教各位大侠了,急! 用Delphi可以做出好的登陆系统吗? 急!用Query进行汇总,如何返回汇总的值??? 在SYBASE里的事务处理中能不能包括建表、删表、修改表结构操作呀? 一个delphi的简单问题 为什么我不能在主窗口中加入图片.请大家帮. 初学者请问一个简单的问题(关于脚本) =====installshield 5.1到底怎么用===
unit SizerControl;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;
type
TSizerControl = class(TCustomControl)
private
FControl: TControl;
FRectList: Array [1..8] of TRect;
FPosList: Array [1..8] of Integer;
{ Private declarations }
protected
{ Protected declarations }
public
constructor Create(AOwner: TComponent; AControl: TControl);
procedure CreateParams(var Params: TCreateParams); override;
procedure Createhandle;override;
procedure WmNcHitTest(var Msg: TWmNcHitTest); message wm_NcHitTest;
procedure WmSize(var Msg:TWmSize); message wm_Size;
procedure WmLButtonDown(var Msg: TWmLButtonDown); message wm_LButtonDown;
procedure WmMove(var Msg: TWmMove); message Wm_Move;
procedure Paint; override;
procedure SizeControlExit(Sender: TObject);
{ Public declarations }
published
{ Published declarations }
end;
const
sc_DragMove: Longint = $F012;
procedure Register;
implementation
constructor TSizerControl.Create(AOwner: TComponent; AControl: TControl);
var
R: TRect;
begin
inherited Create(AOwner);
FControl := AControl;
OnExit := SizeControlExit;
R := FControl.BoundsRect;
InflateRect(R, 2, 2);
BoundsRect := R;
Parent := FControl.Parent;
FPosList[1] := htTopLeft;
FPosList[2] := htTop;
FPosList[3] := htTopRight;
FPosList[4] := htRight;
FPosList[5] := htBottomRight;
FPosList[6] := htBottom;
FPosList[7] := htBottomLeft;
FPosList[8] := htLeft;
end;
procedure TSizerControl.CreateParams(var Params: TCreateParams);
begin
inherited CreateParams(Params);
//增加透明特性
Params.ExStyle := Params.ExStyle
+ WS_EX_TRANSPARENT;
end;
procedure TSizerControl.Createhandle;
begin
inherited Createhandle;
SetFocus;
end;procedure TSizerControl.WmNcHitTest(var Msg: TWmNcHitTest);
var
Pt: TPoint;
I: Integer;
begin
Pt := Point(Msg.XPos, Msg.YPos);
Pt := ScreenToClient(Pt);
Msg.Result := 0;
//检测鼠标位置并改变状态
for I := 1 to 8 do
if PtInRect(FRectList[I], Pt) then
Msg.Result := FPosList[I];
if Msg.Result = 0 then
inherited;
end;procedure TSizerControl.WmSize(var Msg:TWmSize);
var
R: TRect;
begin
R := BoundsRect;
InflateRect( R, -2, -2);
FControl.BoundsRect := R;
//计算8个黑方框
FRectList[1] := Rect(0 ,0, 5, 5);
FRectList[2] := Rect(Width div 2 - 3, 0, Width div 2 + 2, 5);
FRectList[3] := Rect(Width - 5, 0, Width, 5);
FRectList[4] := Rect(Width - 5, height div 2 - 3, Width, Height div 2 + 2);
FRectList[5] := Rect(Width - 5, Height - 5, Width, Height);
FRectList[6] := Rect(Width div 2 - 3, Height - 5, Width div 2 + 2, Height);
FRectList[7] := Rect(0, Height -5, 5, Height);
FRectList[8] := Rect(0, Height div 2 - 3, 5, Height div 2 + 2);
end;
procedure TSizerControl.WmLButtonDown(var Msg: TWmLButtonDown);
begin
//执行拖动命令
Perform(Wm_SysCommand, sc_DragMove, 0);
end;procedure TSizerControl.WmMove(var Msg: TWmMove);
var
R: TRect;
begin
R := BoundsRect;
InflateRect( R, -2, -2);
FControl.Invalidate;
FControl.BoundsRect := R;
end;
procedure TSizerControl.Paint;
var
I: Integer;
begin
Canvas.Brush.Color := clBlack;
for I := 1 to 8 do
with FRectList[I] do
Canvas.Rectangle (Left, Top, Right, Bottom);
end;procedure TSizerControl.SizeControlExit(Sender: TObject);
begin
Free;
end;
procedure Register;
begin
RegisterNoicon([TSizerControl]);
end;end
主窗口程序:
unit Unit1;interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ExtCtrls;type
TForm1 = class(TForm)
btn: TButton;
GroupBox1: TGroupBox;
procedure btnMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure GroupBox1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
private { Private declarations }
public
{ Public declarations }
end;var
Form1: TForm1;implementation
uses SizerControl;{$R *.DFM}procedure TForm1.btnMouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
SizeControl: TSizerControl;
begin
SizeControl := TSizerControl.Create(self, btn);
end;procedure TForm1.GroupBox1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
SizeControl: TSizerControl;
begin
SizeControl := TSizerControl.Create(self, GroupBox1);
end;
end.
我的Email: [email protected]
[email protected]