发表于 2009-1-5 19:48
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濡備綍鍦―elphi绋嬪簭涓敮鎸佹枃浠舵嫋鏀
鍙戝竷: 2008-6-26 20:33 | 浣滆: admin | 鏌ョ湅: 23娆
width="84%">濡備綍鍦―elphi绋嬪簭涓敮鎸佹枃浠舵嫋鏀
鏀寔鏂囦欢鎷栨斁鍏抽敭鍦ㄤ簬涓ょ偣锛
1銆佷娇绋嬪簭鑳芥帴鏀禬M_DROPFILES 娑堟伅锛
2銆佸湪WM_DROPFILES
娑堟伅鐨勫搷搴旂▼搴忎腑鍙栧緱琚嫋鏀剧殑鏂囦欢鍚嶏紝鐒跺悗杩涜鐩稿簲澶勭悊銆
浣跨▼搴忚兘鎺ユ敹WM_DROPFILES 娑堟伅
棣栧厛锛岄渶瑕佽皟鐢╓INAPI DragAcceptFiles(handle,True);鍏朵腑鐨刪andle涓鸿鎺ユ敹WM_DROPFILES娑堟伅鐨勬帶浠剁殑handle銆備緥濡傦紝鎴戜滑瑕佽Memo1鎺ユ敹璇ユ秷鎭紝鍒欒皟鐢ㄥ舰寮忎负DragAcceptFiles(Form1.Memo1.handle,True);
鍏舵锛岃鍦ㄦ敹鍒癢M_DROPFILES娑堟伅鏃跺仛澶勭悊锛岄渶瑕佺敤鑷繁鐨勪唬鐮佹浛鎹㈣鎺т欢鐨刉indowProc鏂规硶銆傚湪鏇挎崲鍓嶏紝瑕佷繚瀛樺師鏉ョ殑WindowProc鏂规硶浠ヤ究澶勭悊鍏朵粬娑堟伅銆備负姝わ紝鎴戜滑瀹氫箟涓涓叏绋嬪彉閲
OldWndProc:TWndMethod淇濆瓨鍘熸潵鐨刉indowProc鏂规硶;鍐嶅湪绐椾綋瀹氫箟鐨凱ublic娈靛畾涔変簡涓涓柟娉昿rocedure
DragFileProc(var Message: TMessage);浣滀负鏂扮殑WindowProc鏂规硶銆傚湪Unit鐨刬mplementation
娈靛唴鍐欎笅DragFileProc鐨勫畬鏁翠唬鐮侊紝褰撴秷鎭负鍏朵粬娑堟伅鍦拌皟鐢∣ldWndProc鏉ュ鐞嗭紝褰撴秷鎭负WM_DROPFILES鏃讹紝浣滅浉搴斿鐞嗐
鍙栧緱琚嫋鏀剧殑鏂囦欢鍚嶏紝鐒跺悗杩涜鐩稿簲澶勭悊
鍦╓M_DROPFILES娑堟伅鐨勫搷搴旂▼搴忎腑锛屽厛璋冪敤DragQueryFile(Message.wParam锛$FFFFFFFF,nil,0)杩斿洖鍊间负鎷栨斁鐨勬枃浠舵绘暟銆傚啀寰幆璋冪敤DragQueryFile(Message.wParam,i,buf,len);鍙栧緱鎷栨斁鏂囦欢鍏ㄥ悕銆俰涓0鍒版嫋鏀剧殑鏂囦欢鎬绘暟鍑1
鐨勫硷紝buf涓篜char鍨嬶紝鏄瓨鏀炬枃浠跺悕鐨勭紦鍐插尯锛宭en涓烘枃浠跺悕缂撳啿鍖洪暱搴︺傝嚦浜庡彇寰楁枃浠跺悕鍚庣殑澶勭悊锛屽氨鎮夊惉灏婁究浜嗐備竴瀹氳娉ㄦ剰Pchar鍜孲tring鐨勮浆鎹紒
浠ヤ笅涓虹▼搴忕墖娈
type
TForm1 = class(TForm)
.
.
.
btnEnableDragFile:
TButton;
.
.
.
procedure
btnEnableDragFileClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
procedure
DragFileProc(var Message: TMessage);
end;
implementation
var OLDWndProc:TWndMethod;
.
.
.
procedure TForm1.btnEnableDragFileClick(Sender: TObject);
begin
DragAcceptFiles(self.MemoDrag.Handle,true);
OLDWndProc:=self.MemoDrag.WindowProc;
//淇濆瓨鍘熸潵鐨刉indowProc
self.MemoDrag.WindowProc:=self.DragFileProc;
//璁剧疆鏂扮殑WindowProc
end;
