精心打造的New MMS Form

----摘自：http://blog.youkuaiyun.com/feifei1018/archive/2005/08/31/469027.aspx

//功能：添加新的彩信数据到数据库

//作者：陈鹏

//完成日期：2005－80－31

unit newmmsForlibrary;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ImgList, xpWindow, Mask, RzEdit, RzSpnEdt, StdCtrls, RzCmboBx,
  ExtCtrls, xpPanel, xpBitBtn, VirtualTrees, RzButton, RzRadChk,database,
  Buttons,StrUtils;

type
  TNewMMS = class(TForm)
    CancelBtn: TxpBitBtn;
    RightPanel: TBackPanel;
    lblTitle: TLabel;
    lblSubject: TLabel;
    lblType: TLabel;
    edtSubject: TEdit;
    RCBType: TRzComboBox;
    xpWindow1: TxpWindow;
    ilImages: TImageList;
    imgNewMsg: TImage;
    VSTreeResource: TVirtualStringTree;
    RzRadioButton1: TRzRadioButton;
    RzRadioButton2: TRzRadioButton;
    lblSmil: TLabel;
    XpBtnAdd: TxpBitBtn;
    XpBtnDelete: TxpBitBtn;
    ResourceAdd:TxpBitBtn;
    lblSize: TLabel;
    edtsize: TEdit;
    ilTreeImage: TImageList;
    dlgOpenAdd: TOpenDialog;
    procedure CancelBtnClick(Sender: TObject);
    procedure XpBtnAddClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure ResourceAddClick(Sender: TObject);
    procedure VSTreeResourceGetText(Sender: TBaseVirtualTree;
      Node: PVirtualNode; Column: TColumnIndex; TextType: TVSTTextType;
      var CellText: WideString);
    procedure XpBtnDeleteClick(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure edtSubjectMouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
  private
    function getFilenameFromFullpath(s:string):string;
    function getFileSize(sFileName:string):Longint;
    procedure getMMSContentType();
  public
    totalSize:Longint;
    Stringlist:TStringList;
    procedure RefreshTree();
  end;

type
  PResource=^TResource;
  TResource=record  //彩信结构（好像没使用ClassID ，哈哈）
    classID:string;
    FullPath:string;
  end;

var
  NewMMS: TNewMMS;

implementation
uses
 mmslibrarypage;

{$R *.dfm}

//功能：刷新树

procedure TNewMMS.RefreshTree();
begin
  VSTreeResource.RootNodeCount:=Stringlist.Count;
  VSTreeResource.Refresh;
end;

procedure TNewMMS.CancelBtnClick(Sender: TObject);
begin
  close;
end;

procedure TNewMMS.XpBtnAddClick(Sender: TObject);
var
  sql:string;
  smiltype:string;
begin
  if RzRadioButton1.Checked=true then
     smiltype:='Smil 1.0'
  else
     smiltype:='Smil 2.0';

//  sqL:='insert into mmslibrary(MMS_ID,MMS_Type,MMS_Smil,MMS_Size,MMS_Subject,MMS_Binary) values'+
//        '("'+formatDatetime('yyyymmdd_hh:mm:ss', now)+'","'+RCbtype.Text+'","'+smiltype+'",'+edtsize.Text+',"'+
//        edtIpSubject.Text+'","'+'test")';

//添加数据到数据库，但最后一项（二进制内存块） 还没添加

 sqL:='insert into mmslibrary(MMS_ID,MMS_Type,MMS_Smil,MMS_Size,MMS_Subject) values'+
        '("'+formatDatetime('yyyy-mm-dd hh:mm:ss', now)+'","'+RCbtype.Text+'","'+smiltype+'",'+inttostr(totalSize)+',"'+ edtSubject.Text+'")';

  currentdatabase.ExecuteSqlNoQurey(sql); //连接数据库，就是这么容易
  Close;
  ModalResult:=mrOk;//据此，mmslibraryform才能刷新树。这也曾是一个难题，哈哈
end;

procedure TNewMMS.FormCreate(Sender: TObject);
begin
  currentdatabase.databases.GetByIndex(0);
  Stringlist:=Tstringlist.Create;
  VSTreeResource.NodeDataSize:=SizeOf(TResource);
  VSTreeResource.Header.Columns[0].Width:=VSTreeResource.ClientWidth;
  totalSize:=0; //用户选择彩信资源的文件总大小
end;

procedure TNewMMS.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  Action:=caFree;
end;

procedure TNewMMS.ResourceAddClick(Sender: TObject);
var
  temp:Longint;
begin
  dlgOpenAdd.Filter:='text files(*.txt;*.html;*.htm)|*.txt;*.html;*.htm|pictual files(*.bmp;*.jpg;*.gif)|*.bmp;*.jpg;*.gif|sound files(*.wma;*.mp3)|*.wma;*.mp3|video files(*.avi;*.mp4)|*.avi;*.mp4|';

  if  dlgOpenAdd.Execute then
  begin
    temp:=totalSize+getFileSize(dlgOpenAdd.FileName);

    if temp<102400 then  //判断文件总大小不能超过100k，否则不予添加
    begin
       totalSize:=temp;
       Stringlist.Add(dlgOpenAdd.FileName);
       edtsize.Text:=IntToStr(totalSize)+' Byte';
    end
    else
      Exit;
  end;
  RefreshTree;

  getMMSContentType;

end;

//自写函数，根据用户选择的文件，自动判断MMS的Type，虽长且繁，但好维护（）

procedure TNewMMS.getMMSContentType(); 
var
  i:Integer;
  extendname:string;
  text,picture,sound,video:Integer;
begin
  text:=0;
  picture:=0;
  sound:=0;
  video:=0;

  if Stringlist.Count=0 then  RCBType.ItemIndex:=0;

  for i := 0 to Stringlist.Count - 1 do
  begin
    extendname:=LowerCase( RightStr(Trim(Stringlist.Strings[i]),3));
    if (extendname='txt') or (extendname='htm') or (extendname='tml') then
        text:=text+1;
    if (extendname='bmp') or (extendname='jpg') or (extendname='gif') then
        picture:=picture+1;
    if (extendname='wma') or (extendname='mp3') then
        sound:=sound+1;
    if (extendname='avi') or (extendname='mp4') then
        video:=video+1;
  end;

  if (text>0) and (picture=0) and (sound=0) and (video=0) then
     RCBType.ItemIndex:=0;

  if (text=0) and (picture>0) and (sound=0) and (video=0) then
     RCBType.ItemIndex:=1;

  if (text>0) and (picture>0) and (sound=0) and (video=0) then
     RCBType.ItemIndex:=2;

  if (text=0) and (picture=0) and (sound>0) and (video=0) then
     RCBType.ItemIndex:=3;

  if (text>0) and (picture=0) and (sound>0) and (video=0) then
     RCBType.ItemIndex:=4;

  if (text=0) and (picture>0) and (sound>0) and (video=0) then
     RCBType.ItemIndex:=5;

  if (text>0) and (picture>0) and (sound>0) and (video=0) then
     RCBType.ItemIndex:=6;

  if (text=0) and (picture=0) and (sound=0) and (video>0) then
     RCBType.ItemIndex:=7;

  if (text>0) and (picture=0) and (sound=0) and (video>0) then
     RCBType.ItemIndex:=8;

  if (text=0) and (picture>0) and (sound=0) and (video>0) then
     RCBType.ItemIndex:=9;

  if (text>0) and (picture>0) and (sound=0) and (video>0) then
     RCBType.ItemIndex:=10;

  if (text=0) and (picture=0) and (sound>0) and (video>0) then
     RCBType.ItemIndex:=11;

  if (text>0) and (picture=0) and (sound>0) and (video>0) then
     RCBType.ItemIndex:=12;

  if (text=0) and (picture>0) and (sound>0) and (video>0) then
     RCBType.ItemIndex:=13;

  if (text>0) and (picture>0) and (sound>0) and (video>0) then
     RCBType.ItemIndex:=14;

end;

//自写函数，获取文件的大小，值为Byte，故数据类型选择longint

function TNewMMS.getFileSize(sFileName:string):Longint;
var
  Attrs: Word;
  f: file of Byte;
  size: Longint;
begin
  Attrs := FileGetAttr(sFileName);
  try
    AssignFile(f, sFileName);
    Reset(f);
    size := FileSize(f);
  finally
    CloseFile(f);
  end;
  result:=size;
end;

procedure TNewMMS.VSTreeResourceGetText(Sender: TBaseVirtualTree;
  Node: PVirtualNode; Column: TColumnIndex; TextType: TVSTTextType;
  var CellText: WideString);
var
  i:Integer;
begin
  for I := 0 to Stringlist.Count - 1 do
  begin
    case Column of
      0: CellText:=getFilenameFromFullpath(Stringlist[node.index]);
    end;
  end;
end;

//自写函数，根据文件的绝对路径，得到包括了扩展名的文件名

function TNewMMS.getFilenameFromFullpath(s:string):string;
var
  i:Integer;
  temp:string;
begin
  temp:=trim(s);
  i:=Pos('/',temp);
  while i<>0 do
  begin
    temp:=copy(temp,i+1,StrLen(PAnsiChar(temp))-i);
    i:=Pos('/',temp);
  end;
  result:=temp;
end;

procedure TNewMMS.XpBtnDeleteClick(Sender: TObject);
var
  node:PVirtualNode;
begin
  if VSTreeResource.FocusedNode=nil then  Exit;

  node:=VSTreeResource.FocusedNode;

  totalSize:=totalSize-getFileSize(Stringlist.Strings[node.index]);
  edtsize.Text:=IntToStr(totalSize)+' Byte';

  Stringlist.Delete(node.Index);
  RefreshTree;

  getMMSContentType;

end;

procedure TNewMMS.FormDestroy(Sender: TObject);
begin
  stringlist.Free;
  inherited;
end;

procedure TNewMMS.edtSubjectMouseMove(Sender: TObject; Shift: TShiftState;
  X, Y: Integer);
begin
   if edtsubject.Text='You  can set a subject here' then
      edtSubject.SetFocus;
end;

end.

『绝对原创 飞飞于北京 2005-08-31』