如何拖放文件到Memo中,得到文件路径
以下的代码是拖到窗口form中，我想改为拖到memo中，可是
procedure Tform1.DropFiles(var Message:TMessage);
改为 procedure Tmemo1.DropFiles(var Message:TMessage); 并不能实现
请问如何修改。我delphi不是很熟,希望能给出本题的答案，而不是一大段代码。谢谢！
我没多少分了。见谅!
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ShellApi, StdCtrls;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
procedure DropFiles(var Message:TMessage);message WM_DropFiles;
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure Tform1.DropFiles(var Message:TMessage);
var
bufsize,num:Cardinal;
FilePath:array of Char;
begin
num:=DragQueryFile(Message.wParam,$FFFFFFFF,nil,0); //取得文件个数
for num:=0 to num-1 do begin
bufsize:=DragQueryFile(Message.wParam,num,nil,0);
setlength(FilePath,bufsize+1);
DragQueryFile(Message.wParam,num,pchar(FilePath),bufsize+1);
showmessage(pchar(FilePath)); //显示拖入来的文件完整路径
end;
dragfinish(Message.wParam);
end;
procedure Tform1.FormCreate(Sender: TObject);
begin
DragAcceptFiles(Handle,True);
end;
end.
问题点数：40、回复次数：5Top
1 楼weizi2000（秋风啊）回复于 2006-02-08 17:10:39 得分 0
showmessage(pchar(FilePath)); //显示拖入来的文件完整路径
->
Memo1.Lines.Append(StrPas(FilePath)); 不行吗？Top
2 楼huanggj（新人）回复于 2006-02-09 18:02:27 得分 0
学习Top
3 楼xzhifei（饭桶超人(最讨厌两种人，一种是有种族歧视的人，一种是日本人！)）回复于 2006-02-09 18:10:15 得分 40
刚刚帮人解决了这种问题，现在稍稍改一下
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, activeX, shellapi, shlobj;
type
TForm1 = class(TForm)
Edit1: TEdit;
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
procedure AppMessage(var Msg: TMsg; var Handled: Boolean);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
type
LINK_FILE_INFO = record ///快捷方式文件信息数据结构
FileName: array[0..MAX_PATH] of char; ///目标文件名
WorkDirectory: array[0..MAX_PATH] of char; ///工作目录
IconLocation: array[0..MAX_PATH] of char; ///图标文件
IconIndex: integer; ///图标索引
Arguments: array[0..MAX_PATH] of char; ///运行参数
Description: array[0..255] of char; ///文件描述
ItemIDList: PItemIDList; ///系统IDList，未使用
RelativePath: array[0..255] of char; ///相对路径
ShowState: integer; ///运行时的现实状态
HotKey: word; ///热键
end;
function linkfileinfo(const lnkfilename: string; var info: link_file_info; const bset: boolean): boolean;
var
hr: hresult;
psl: ishelllink;
wfd: win32_find_data;
ppf: ipersistfile;
lpw: pwidechar;
buf: pwidechar;
begin
result := false;
getmem(buf, max_path);
try
if succeeded(coinitialize(nil)) then
if (succeeded(cocreateinstance(clsid_shelllink, nil, clsctx_inproc_server, iid_ishelllinka, psl))) then
begin
hr := psl.queryinterface(ipersistfile, ppf);
if succeeded(hr) then
begin
lpw := stringtowidechar(lnkfilename, buf, max_path);
hr := ppf.load(lpw, stgm_read);
if succeeded(hr) then
begin
hr := psl.resolve(0, slr_no_ui);
if succeeded(hr) then
begin
if bset then
begin
psl.setarguments(info.arguments);
psl.setdescription(info.description);
psl.sethotkey(info.hotkey);
psl.seticonlocation(info.iconlocation, info.iconindex);
psl.setidlist(info.itemidlist);
psl.setpath(info.filename);
psl.setshowcmd(info.showstate);
psl.setrelativepath(info.relativepath, 0);
psl.setworkingdirectory(info.workdirectory);
result := succeeded(psl.resolve(0, slr_update));
end
else
begin
psl.getpath(info.filename, max_path, wfd, slgp_shortpath);
psl.geticonlocation(info.iconlocation, max_path, info.iconindex);
psl.getworkingdirectory(info.workdirectory, max_path);
psl.getdescription(info.description, 255);
psl.getarguments(info.arguments, max_path);
psl.gethotkey(info.hotkey);
psl.getidlist(info.itemidlist);
psl.getshowcmd(info.showstate);
result := true;
end;
end;
end;
end;
end;
finally
freemem(buf);
end;
end;
function GetLinkFile_ExeName(LinkFile: string): string;
var
info: link_file_info;
begin
Result := '';
if linkfileinfo(LinkFile, info, False) then
begin
Result := info.FileName;
end;
end;
procedure TForm1.AppMessage(var Msg: TMsg; var Handled: Boolean);
var
nFiles, I: Integer;
Filename: string;
begin
//
// 注意！所有消息都将通过这里！
// 不要在此过程中编写过多的或者需要长时间操作的代码，否则将影响程序的性能
//
// 判断是否是发送到ListView1的WM_DROPFILES消息
if (Msg.message = WM_DROPFILES) and (msg.hwnd = Memo1.Handle) then
begin
// 取dropped files的数量
nFiles := DragQueryFile(Msg.wParam, $FFFFFFFF, nil, 0);
// 循环取每个拖下文件的全文件名
try
for I := 0 to nFiles - 1 do
begin
// 为文件名分配缓冲 allocate memory
SetLength(Filename, 80);
// 取文件名 read the file name
DragQueryFile(Msg.wParam, I, PChar(Filename), 80);
Filename := PChar(Filename);
//file://将全文件名分解程文件名和路径
if UpperCase(ExtractFileExt(FileName)) = '.LNK' then
Memo1.Line.Add( GetLinkFile_ExeName(FileName))
else
Memo1.Line.Add(FileName);
end;
finally
//file://结束这次拖放操作
DragFinish(Msg.wParam);
end;
//file://标识已处理了这条消息
Handled := True;
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
//file://设置需要处理文件WM_DROPFILES拖放消息
DragAcceptFiles(Memo1.Handle, TRUE);
//file://设置AppMessage过程来捕获所有消息
Application.OnMessage := AppMessage;
end;
end.
Top
4 楼summersky204608（）回复于 2006-02-10 09:35:32 得分 0
学习！留个爪印！Top
5 楼ly_liuyang（Liu Yang LYSoft http://lysoft.7u7.net）回复于 2006-02-10 10:17:00 得分 0
文件拖放,用控件就最简单的
例如DropMasterTop
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