关于资源泄漏，讨论一下！

[o_lb_o]

到底什么是资源泄漏？应该首先研究一下什么是资源，从MSDN上的解释，资源定义有几个：
1 A piece of static data, such as a dialog box, that can be used by more than one application or in more than one place within an application. Alternatively, any part of a computer or network, such as a disk drive, printer, or memory, that can be used by a program or process.

2Binary data the resource compiler or developer adds to an application's executable file. Windows resources include icons, cursors, menus, dialog boxes, bitmaps, fonts, keyboard-accelerator tables, message-table entries, string-table entries, version data, and user-defined data.

定义1比定义而更广，却更不容易把握，不知道哪里能找到更准确的定义？希望听到大家的高见.

[termite]

user object leak, u can find more info from windows help.

[endless2000]

常见的资源泄漏有：画笔、数据库连接、字体、设备上下文、窗口、时钟、信号量、线程、进程、文件等系统资源的泄漏.

参见boundschecker帮助中的说明：
Resource leak：
A system resource (HBRUSH, DLL, file etc.) was created or opened and never freed or closed.

When your program terminates, checking occurs to ensure you have freed all allocated blocks of memory and resources, and all blocks and resources still allocated, along with their size and location, are automatically listed.

Note: If you are not seeing source code for the leak then it is likely that the allocating module does not have debug information. This occurs mostly with third party packages or system code. However, you are provided with the address which can be used to determine the source line where the memory was allocated.

C++ Sample Code

...
hResource = LoadResource (hInstance,

FindResource (hInstance, "TEXT", RT_STRING) );

/* without a later FreeResource statement */
...

Pascal Sample Code

The following shows a similar error in Pascal code.

procedure BitmapLeak;
var
hBitmap: THandle;
begin
hBitmap := CreateBitmap(80,80,1,8,NIL);
end;