2017-09-14 – 采蕨

DirectFB 快速入门

DirectFB（简称 DFB）

#include <stdio.h>

#include <unistd.h>

#include <directfb.h>

static IDirectFB *dfb = NULL;

static IDirectFBSurface *primary = NULL;

static int screen_width = 0;

static int screen_height = 0;

#define DFBCHECK(x...) \

{ \

DFBResult err = x; \

if (err != DFB_OK) \

{ \

fprintf( stderr, "%s <%d>:\n\t", __FILE__, __LINE__ ); \

DirectFBErrorFatal( #x, err ); \

} \

}

int main (int argc, char **argv) {

DFBSurfaceDescription dsc;

DFBCHECK (DirectFBInit (&argc, &argv));

DFBCHECK (DirectFBCreate (&dfb));

DFBCHECK (dfb->SetCooperativeLevel (dfb, DFSCL_FULLSCREEN));

dsc.flags = DSDESC_CAPS;

dsc.caps = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

DFBCHECK (dfb->CreateSurface( dfb, &dsc, &primary ));

DFBCHECK (primary->GetSize (primary, &screen_width, &screen_height));

DFBCHECK (primary->FillRectangle (primary, 0, 0, screen_width, screen_height));

DFBCHECK (primary->SetColor (primary, 0x80, 0x80, 0xff, 0xff));

DFBCHECK (primary->DrawLine (primary,

0, screen_height / 2,

screen_width - 1, screen_height / 2));

DFBCHECK (primary->Flip (primary, NULL, 0));

sleep (5);

primary->Release( primary );

dfb->Release( dfb );

return 23;

}

1	$ gcc `pkg-config --cflags --libs` dfb.c

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