delphi 在运行的EXE拖动控件及改变控件的大小
1.在private添加
procedure ComponentControl(Control: TControl; Shift: TShiftState;
X,Y,Precision: integer);
2.添加代码
procedure TForm1.ComponentControl(Control: TControl; Shift: TShiftState;
X, Y, Precision: integer);
var
SC_MANIPULATE: Word;
begin
if (X<=Precision) and (Y>Precision) and (Y<Control.Height-Precision) then
begin
SC_MANIPULATE := $F001;
Control.Cursor := crSizeWE;
end
else if (X>=Control.Width-Precision) and (Y>Precision) and (Y<Control.Height-Precision) then
begin
SC_MANIPULATE := $F002;
Control.Cursor := crSizeWE;
end
else if (X>Precision) and (X<Control.Width-Precision) and (Y<=Precision) then
begin
SC_MANIPULATE := $F003;
Control.Cursor := crSizeNS;
end
else if (X<=Precision) and (Y<=Precision) then
begin
SC_MANIPULATE := $F004;
Control.Cursor := crSizeNWSE;
end
else if (X>=Control.Width-Precision) and (Y<=Precision) then
begin
SC_MANIPULATE := $F005;
Control.Cursor := crSizeNESW ;
end
else if (X>Precision) and (X<Control.Width-Precision) and (Y>=Control.Height-Precision) then
begin
SC_MANIPULATE := $F006;
Control.Cursor := crSizeNS;
end
else if (X<=Precision) and (Y>=Control.Height-Precision) then
begin
SC_MANIPULATE := $F007;
Control.Cursor := crSizeNESW;
end
else if (X>=Control.Width-Precision) and (Y>=Control.Height-Precision) then
begin
SC_MANIPULATE := $F008;
Control.Cursor := crSizeNWSE;
end
else if (X>5) and (Y>5) and (X<Control.Width-5) and (Y<Control.Height-5) then
begin
SC_MANIPULATE := $F009;
Control.Cursor := crSizeAll;
end
else
begin
SC_MANIPULATE := $F000;
Control.Cursor := crDefault;
end;
if Shift=[ssLeft] then
begin
ReleaseCapture; //释放鼠标的捕获功能，使之能得到所有鼠标输入！
Control.Perform(WM_SYSCOMMAND, SC_MANIPULATE, 0);
end;
end;
3.在需要拖动或改变大小的控件的OnMouseMove:
ComponentControl((Sender as TControl), Shift, X, Y, 10);
