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CnVCL 组件包
» CnGraphics.pas 含有内存泄露
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Subject: CnGraphics.pas 含有内存泄露
freespace8
新警察
UID 22007
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Registered 2007-8-2
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#1
Post at 2007-8-2 22:41
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P.M.
CnGraphics.pas 含有内存泄露
行 2685-2686
原代码
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CODE:
if Assigned(FCanvas) then
TCnCanvas(FCanvas).FreeContext; // 释放DC
改为
[Copy to clipboard]
CODE:
if Assigned(FCanvas) then
TCnCanvas(FCanvas).Free; // 释放DC
即可解决。
fastmm报的代码
21 - 28 bytes: TBrush x 3, TPen x 3
29 - 36 bytes: TFont x 3, Unknown x 2
53 - 68 bytes: Unknown x 1
85 - 100 bytes: TCnCanvas x 3
zjy
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#2
Post at 2007-8-6 08:33
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P.M.
多谢报告!
经检查,TCnBitmap确实存在内存泄漏,FCanvas在TCnBitmap中创建了而没有释放。
这个单元是2002年在Win98下写的,当时设计时考虑到Win98下GDI资源有限的情况,所以增加了很多GDI句柄动态处理的代码,现在来看在XP下是没什么意义了。
TCnCanvas.FreeContext用于释放图形句柄资源,FCanvas对象本身在TCnBitmap的析构器中释放更为合理。近期我会将修改过的代码提交到CVS上。
Zhou JingYu
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