Accessing the screen directly - GameCreators Forum

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Mahoney

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Joined: 14th Apr 2008

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Posted: 13th Oct 2008 09:03 Edited at: 13th Oct 2008 09:21

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Is it possible? I'm trying either direct or indirect editing of the screen pixels like so:

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void )
{
	dbSyncOn();
	dbSyncRate(60);

	dbSetDisplayMode(1024, 768, 32);

        //INDIRECT ONLY
	//dbCreateBitmap(1, 1024, 768);
	//dbSetCurrentBitmap(1);
        //END INDIRECT ONLY

	dbLockPixels();

	char* ptrImage = (char*)dbGetPixelsPointer();
	int imageWidthSize = dbGetPixelsPitch();

	*ptrImage = 28;
        //or should it be
        //prtImage[0] = 28;
        //?

	dbUnlockPixels();

        //INDIRECT ONLY
	//dbGetImage(1, 0, 0, 1024, 768);
	//dbSetCurrentBitmap(0);
	//dbPasteImage(1, 0, 0);
        //END INDIRECT ONLY

	while ( LoopGDK ( ) )
	{
		dbSync ( );
	}

	return;
}

It crashes, with or without the indirect-method code. How should I do this differently?

EDIT: working now. Sorry.

Windows Vista Home Premium Intel Pentium Dual-Core 1.6 Ghz 1GB DDR2 RAM GeForce 8600GT Twin Turbo

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