制作从屏幕右下角逐渐弹出的消息提示框
2006-02-04 13:57:06 来源:WEB开发网前段时间因为要在原来的软件上增加一个快捷键提示窗体,这个提示窗要求在显示的时候比较醒目美观能引起用户注意,显示后不影响用户操作,能够关掉。很自然的就想到了Messenger那个从屏幕右下角逐渐弹出的消息提示窗体,不过相对Messenger我更喜欢QQ2004奥运版的配色风格,反正都是偷就多偷点吧,下面快捷键提示窗的最终效果:
这个窗体有以下几个特点:
1、显示的时候是从屏幕右下角逐渐弹出的;
2、它是个无标题窗体,但它必须允许用户移动和改变大小,因此要用到无标题窗体拖动、改变大小的技术;
3、它是个不规则的窗体,主要是左上角和右上角是圆形导角,因此要为窗体创建外形,且窗体改变大小时必须重建;
4、它标题和内容显示区都有渐层色,标题还有几个小点点,在实现时使用取巧的方法,直接利用截图进行填充。
当然界面可以偷,代码就得老老实实的写的了,下面是界面设计图和实现代码:
界面formPSHotKey.frm内容 [内容较长,请点击此处找开/折叠] |
object frmPSHotKey: TfrmPSHotKey |
代码formPSHotKey.pas内容 |
unit formPSHotKey; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, ExtCtrls, StdCtrls, Buttons; {======================================================================== 文章为作者原创,转载前请先与本人联系,转载请注明文章出处、保留作者信息,谢谢支持! end; var frmPSHotKey: TfrmPSHotKey; implementation {$R *.dfm} procedure TfrmPSHotKey.FormCreate(Sender: TObject); begin Tag := Height; Height := 16; //定位到屏幕右下角 Top := Screen.Height - 40; Left := Screen.Width - Width - 2; Show; //从屏幕右下角逐渐弹出 while Height<Tag do begin Height := Height + 5; Top := Top - 5; Update; application.ProcessMessages; Sleep(10); end; Height := Tag; Tag := 0; Color := $F4BA9D; FormResize(Sender); end; procedure TfrmPSHotKey.FormPaint(Sender: TObject); var i: integer; rgn: HRGN; r: TRect; begin with Canvas do begin //利用imgTitleBarBG绘制标题背景 for i:=0 to ClientWidth div imgTitleBarBG.Width do Draw(i*imgTitleBarBG.Width, 0, imgTitleBarBG.Picture.Bitmap); if Tag<>0 then Exit; //如果窗体正在弹出状态,不绘制内容面板背景 //绘制内容面板背景 SetRect(r, 5, 15, Width-5, Height-5); StretchDraw(r, imgShapeBG.Picture.Bitmap); Pen.Color := $C97F55; Brush.Style := bsClear; RoundRect(r.Left, r.Top, r.Right, r.Bottom, 6, 6); //绘制窗体边框 rgn := CreateRectRgn(0,0,0,0); GetWindowRgn(Self.Handle, rgn); Brush.Color := $BE796B; windows.FrameRgn(Handle, rgn, Brush.Handle, 2, 2); DeleteObject(rgn); end; end; procedure TfrmPSHotKey.imgTitleBarMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); begin //在标题按下鼠标键时,允许移动窗体或改变窗体大小 ReleaseCapture; if X < 5 then Perform(WM_SYSCOMMAND, $F004, 0) else if X > Width - 5 then Perform(WM_SYSCOMMAND, $F005, 0) else if Y < 3 then Perform(WM_SYSCOMMAND, $F003, 0) else Perform(WM_SYSCOMMAND, $F012, 0); end; procedure TfrmPSHotKey.FormResize(Sender: TObject); var rgn, rgn2: HRGN; begin if Tag<>0 then Exit; //窗体改变大小时重建Rgn rgn := CreateRoundRectRgn(0, 0, Width+1, Height, 4, 4); rgn2 := CreateRectRgn(0, 11, Width, Height); CombineRgn(rgn, rgn, rgn2, RGN_OR); SetWindowRgn(Handle, rgn, True); DeleteObject(rgn); DeleteObject(rgn2); Invalidate; end; procedure TfrmPSHotKey.SpeedButton1Click(Sender: TObject); begin Close; end; //以下几个Label用来改变窗体大小 procedure TfrmPSHotKey.Label11MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); begin ReleaseCapture; if X < 5 then Perform(WM_SYSCOMMAND, $F007, 0) else if X > Width - 5 then Perform(WM_SYSCOMMAND, $F008, 0) else Perform(WM_SYSCOMMAND, $F006, 0); end; procedure TfrmPSHotKey.Label12MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); begin ReleaseCapture; Perform(WM_SYSCOMMAND, $F001, 0); end; procedure TfrmPSHotKey.Label13MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); begin ReleaseCapture; Perform(WM_SYSCOMMAND, $F002, 0); end; //下面代码判断鼠标所在位置,并改变鼠标光标,提示用户可以拖动窗体或改变大小 procedure TfrmPSHotKey.imgTitleBarMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer); begin if X < 5 then imgTitleBar.Cursor := crSizeNWSE else if X > Width - 5 then imgTitleBar.Cursor := crSizeNESW else if Y < 3 then imgTitleBar.Cursor := crSizeNS else imgTitleBar.Cursor := crSizeAll; end; procedure TfrmPSHotKey.Label11MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer); begin if X < 5 then Label11.Cursor := crSizeNESW else if X > Width - 5 then Label11.Cursor := crSizeNWSE else Label11.Cursor := crSizeNS; end; end. |
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