问题来源: http://www.cnblogs.com/del/archive/2009/10/09/1579614.html#1779614
这几天家有病人, 几天没上网了; 看到这个问题我会, 顺便回复了.
发送代码:
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; Edit1: TEdit; procedure Button1Click(Sender: TObject); end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); var h: HWND; Size: Integer; CopyDataStruct: TCopyDataStruct; begin h := FindWindow(nil, '接收窗口'); { 按标题查找目标窗口 } if h > 0 then begin Size := ByteLength(Edit1.Text) + 2; { 多出的两个字节用于后面的 #0 } CopyDataStruct.lpData := PChar(Edit1.Text + #0); { 要发送的字符串, #0 表示 PChar 结束} CopyDataStruct.dwData := WM_COPYDATA; { 指定消息类型 } CopyDataStruct.cbData := Size; { 指定要发送的数据的大小 } SendMessage(h, WM_COPYDATA, 0, Integer(@CopyDataStruct)); { 发送 } end; end; end.
接收代码:
unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Memo1: TMemo; procedure FormCreate(Sender: TObject); private protected procedure WMCopyData(var Message: TWMCopyData); message WM_COPYDATA; public end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.FormCreate(Sender: TObject); begin Caption := '接收窗口'; end; procedure TForm1.WMCopyData(var Message: TWMCopyData); begin Memo1.Lines.Add(PChar(Message.CopyDataStruct.lpData)); end; end.
该代码已在 Delphi 2010 下测试过了.
发现 skymesh 朋友对消息操作不是太熟, 顺便告知个小技巧(其实博客中可能早提到过):
在 TForm1 = class(TForm) ... end; 中执行 Ctrl+空格;
然后输入: wm...(譬如本例输入 wmcopyd 即可) 后回车;
接着执行 Ctrl+Shift+C, 会自动完成上面大部分的消息代码.