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tanjiajun_34
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 Posted: Thu Jul 30, 2009 2:35 am Post subject: GetPixel Question |
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| Code: | procedure TForm1.Timer2Timer(Sender: TObject);
var
MS:hwnd;
MS2:hdc;
huh:Tpoint;
coloursux:COLORREF;
begin
MS2:=GetDC(GetForegroundWindow());
getcursorpos(huh);
Label9.Caption:=inttostr(huh.x);
Label10.Caption:=inttostr(huh.y);
coloursux:=GetPixel(MS2,huh.X,huh.Y);
Label6.Caption:=inttostr(GetRValue(coloursux));
Label7.Caption:=inttostr(GetBValue(coloursux));
Label8.Caption:=inttostr(GetGValue(coloursux));
end; |
Label9 and 10 is just for testing getcursorpos works or not.
Label6 and 7 and 8 I just get 255 in all colours or 0 in all colours when I tried to use in a game in full screen mode. But in windowed mode it works. Any1 konws how to enabled this for full screen mode?
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Anden100
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| Posted: Thu Jul 30, 2009 2:50 am Post subject: |
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Try to change:
| Code: | | GetDC(GetForegroundWindow()); |
To
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smartz993
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| Posted: Thu Jul 30, 2009 2:56 am Post subject: |
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Also make sure you
ReleaseDC(nil,MS2);
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tanjiajun_34
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| Posted: Thu Jul 30, 2009 3:06 am Post subject: |
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| smartz993 wrote: | Also make sure you
ReleaseDC(nil,MS2); |
Thanks. I forget to add. But it does not works too.
@anden100
I get [DCC Error] Unit1.pas(580): E2010 Incompatible types: 'HWND' and 'Pointer'
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smartz993
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| Posted: Thu Jul 30, 2009 3:28 am Post subject: |
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| Try GetDC(0);
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tanjiajun_34
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| Posted: Thu Jul 30, 2009 3:34 am Post subject: |
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| Still get either 0 or 255
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smartz993
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| Posted: Thu Jul 30, 2009 3:36 am Post subject: |
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Are you sure the pixel you're getting isn't the game's cursor?
Try adjusting x/y, images will be skewed because of the fullscreenedness.
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tanjiajun_34
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| Posted: Thu Jul 30, 2009 4:17 am Post subject: |
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| But it is just 0 or 255. The game is not just black or white...
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LolSalad
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| Posted: Thu Jul 30, 2009 4:18 am Post subject: |
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I think that this could be caused by 'security' (not actually sure why it occurs but this is what I read somewhere anyway) implemented in Windows Vista (and probably 7 as well, I am yet to test) that for some reason, does not allow GDI functions to capture pixels from full screen applications. It's a frustrating but unavoidable limitation.
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FullyAwesome
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| Posted: Thu Jul 30, 2009 4:21 am Post subject: |
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what's the game? if it's MS, getpixel's hooked, and if you already know that, you're getting the pixel colour. if it's white that's what you're getting.
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tanjiajun_34
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| Posted: Thu Jul 30, 2009 4:30 am Post subject: |
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| I thought cripplehs make all api bypass?
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FullyAwesome
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| Posted: Thu Jul 30, 2009 5:14 am Post subject: |
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| tanjiajun_34 wrote: | | I thought cripplehs make all api bypass? |
well whatever the bypass is at the moment does that, yeah, i just said that to see what game you're talking about. i used to have that problem as well until i realised i was getting the colour of the cursor. 
you need to get the cursor position, then move the mouse out of the way, then get the colour of the pixels at that location.
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