用directdraw的实时抓屏问题(200分)

Z

zl

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• 2001-08-20

• #21

关注

 

W

wenzang

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• 2001-08-20

• #22

我也在研究抓屏。。。。速度是个大难题。。。。。
有好方法不要告诉我。。。。。。。。。。
我有好方法，也会公布的。。。。。

 

C

coolbaby

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• 2001-10-10

• #23

提前！

 

F

fu_xiang_yu

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• 2001-10-11

• #24

谢谢大家，三个月没上dfw了，我的问题还没被del

继续！

 

老

老赵

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• 2001-10-12

• #25

请看：
http://www.delphibbs.com/delphibbs/dispq.asp?lid=644869
[]

 

C

caowei

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• 2001-10-12

• #26

BitBlt在PIII-800,128M, 1024*768下: 260ms....
too slow........

 

老

老赵

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• 2001-10-12

• #27

不可能的吧??
赛杨533 128M 800*600 12ms.

 

C

caowei

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• 2001-10-12

• #28

不会吧? 12MS?????
我的程序代码:

time1 := gettickcount;
//建立screen bitmap
ScreenBmp := TBitmap.Create;
ScreenBmp.Width := screen.Width;
ScreenBmp.Height := screen.Height;
ScreenBmp.PixelFormat := pf24Bit;

dc := GetWindowDC(0);
try
ScreenCanvas.Handle := dc;
BitBlt(ScreenBmp.Canvas.Handle, 0,0,screen.Width,screen.Height,
dc, 0,0,SRCCOPY);
finally
ReleaseDC(0, DC);
end;
ShowMessage(inttostr(gettickcount-time1));

800*600: 差不多150MS左右!!!!!!!

 

C

caowei

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• 2001-10-12

• #29

我的程序有什么问题吗?

 

老

老赵

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• 2001-10-12

• #30

fu_xiang_yu, 不好意思,借您的宝地讨论.
http://www.delphibbs.com/delphibbs/dispq.asp?lid=538683

 

X

xxxx_xm

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• 2001-11-06

• #31

用bitblt()抓普通屏幕还行，但对影视图象不行，似乎和directx有关，不知各位高手有
无抓影视图象的方法？

 

F

fu_xiang_yu

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• 2001-11-08

• #32

大家：继续谢谢
老赵：不客气，请便......

 

忘

忘情忘爱

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• 2001-11-08

• #33

用DIRECT DRAW抓屏,然后用DIRECT PLAY传输,因该没问题的拉!

 

F

fu_xiang_yu

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• 2002-10-01

• #34

接受答案了.