void longwaitingcode () {
int poll = 0;
MSG msg;
for (int i = 0; i < 1000; i++) {
  // does things.. quite cpu demanding...
 poll++;
 if (poll == 5) {
  GetMessage (&msg, NULL, 0, 0));
  TranslateMessage (&msg);
  DispatchMessage (&msg);
  poll = 0;
 }
if (__global_cancel_button) break; // some global bool var gets true when cancel button is pressed
}
}

GXGFX Engine 0.32a Alpha Hi-Res Version
debug file

GXGetDisplayProperties() returns
.cxWidth  = 240
.cyHeight = 320
.cbxPitch = 2
.cbyPitch = 480


Library assuming hi-res support: 0

rfbi (RawFrameBufferInfo) returns
.cxPixels      = 240
.cyPixels      = 320
.cxStride      = 2
.cyStride      = 480
.pFramePointer = a8500020
.wFormat       = 1
.wBPP          = 16

GXGFX Engine 0.32a Alpha Hi-Res Version
debug file

GXGetDisplayProperties() returns
.cxWidth  = 176
.cyHeight = 220
.cbxPitch = 2
.cbyPitch = 352


Library assuming hi-res support: 0

rfbi (RawFrameBufferInfo) returns
.cxPixels      = 0
.cyPixels      = 0
.cxStride      = 0
.cyStride      = 0
.pFramePointer = 0
.wFormat       = 1
.wBPP          = 0

HDC hdc = GetDC (NULL);
    ExtEscape (hdc, GETRAWFRAMEBUFFER, 0, NULL, sizeof (RawFrameBufferInfo), (char *) &rfbi);
    ReleaseDC (NULL, hdc);    // thank you..

#define GETRAWFRAMEBUFFER   0x00020001

#define FORMAT_565 1
#define FORMAT_555 2
#define FORMAT_OTHER 3

void    bltgapi_stretchHQ (gxImage Source)
{
    // if source != displayadapter..
    if ( ( Source.width == (signed)gx_displayprop.cxWidth) && (Source.height == (signed)gx_displayprop.cyHeight) )
    {
 bltgapi (Source);
 return;
    }

    unsigned short * buffer = (unsigned short *) GXBeginDraw();
    if (buffer == NULL) return;    // do not draw frame

    int  dx = (Source.width << 16) / (gx_displayprop.cxWidth << 8);
    int  dy = (Source.height << 16) / (gx_displayprop.cyHeight<< 8);
    int  rx = 0, ry = 0;
    int  ybump = gx_displayprop.cbyPitch >> 1;
    int  ddx, ddy, xi;
    int  idx, idy;

    unsigned short * sc1;
    unsigned short * sc2;
    unsigned short pix;
    int  r, g, b, r2, g2, b2;

    for (unsigned int y = gx_displayprop.cyHeight - 1; y != 0; y--) {
 sc1 = &Source.framebuffer [ ( ry >> 8 ) * Source.width ];
 sc2 = &Source.framebuffer [ ( ( ry >> 8 ) + 1 ) * Source.width ];
 
 // interpolation won't come freely.. expect a huge performance hit.
 // but it looks so pretty '
 ddy = ry - ( ( ry >> 8) << 8 );
 idy = 256 - ddy;

 for (unsigned int x = 0; x < gx_displayprop.cxWidth; x++) {
     // buffer [x] = sc1 [(rx >> 8)]; ///// toooooo easyyyy .. :)
     xi = rx >> 8;
     ddx = rx - ( (rx >> 8) << 8 );
     idx = 256 - ddx;
     
     // every pixel is formatted rrrr rggg gggb bbbb
     
     pix = sc1 [xi];
     r = (( ((pix & 0xF800) >> 11) << 8 ) * idx ) >> 16;
     g = (( ((pix & 0x07E0) >> 5) << 8 ) * idx ) >> 16;
     b = (( ((pix & 0x001F)) << 8 ) * idx ) >> 16;
     pix = sc1 [xi + 1];
     r+= (( ((pix & 0xF800) >> 11) << 8 ) * ddx ) >> 16;
     g+= (( ((pix & 0x07E0) >> 5) << 8 ) * ddx ) >> 16;
     b+= (( ((pix & 0x001F)) << 8 ) * ddx ) >> 16;
     pix = sc2 [xi];
     r2 = (( ((pix & 0xF800) >> 11) << 8 ) * idx ) >> 16;
     g2 = (( ((pix & 0x07E0) >> 5) << 8 ) * idx ) >> 16;
     b2 = (( ((pix & 0x001F)) << 8 ) * idx ) >> 16;
     pix = sc2 [xi + 1];
     r2+= (( ((pix & 0xF800) >> 11) << 8 ) * ddx ) >> 16;
     g2+= (( ((pix & 0x07E0) >> 5) << 8 ) * ddx ) >> 16;
     b2+= (( ((pix & 0x001F)) << 8 ) * ddx ) >> 16;

     // hor-fusion.
     r = (((r << 8) * idy) >> 16) + (((r2 << 8) * ddy) >> 16);
     g = (((g << 8) * idy) >> 16) + (((g2 << 8) * ddy) >> 16);
     b = (((b << 8) * idy) >> 16) + (((b2 << 8) * ddy) >> 16);

     buffer [x] = (r << 11) + (g << 5) + b;
     
     rx+=dx;
 }
 ry+=dy;
 rx = 0;
 buffer += ybump;
    }

    GXEndDraw();
}

LPWSTR    GetParentDir () {
    LPWSTR    AppPath = (LPWSTR)malloc (256);
    GetModuleFileName (NULL, AppPath, 256);
    int  pos = 0;
    int  ptr;

    do {
 if (AppPath[pos] == '\\') ptr = pos;
 pos++;  
    } while (AppPath[pos] != 0);

    AppPath [ptr+1] = 0;    // terminate string.;)

    return AppPath;
}

scanline += ylbump;

unsigned short * buffer = (unsigned short *) GXBeginDraw();    

    if (buffer == NULL) return;

    int  dx = (Source.width << 16) / (gx_displayprop.cxWidth << 8);
    int  dy = (Source.height << 16) / (gx_displayprop.cyHeight << 8);
    int  rx = 0, ry = 0, by = 0;

    unsigned short * scanline;
    scanline = Source.framebuffer;    

    for (unsigned int y = gx_displayprop.cyHeight; y > 0; y--) {
 if ( (by >> 8) != ry) {
     ry = ( by >> 8 );
     scanline += Source.width;
 }
 for (unsigned int x = gx_displayprop.cxWidth; x > 0; x--) {
     buffer [x] = scanline [(rx >> 8)];
     rx+=dx;
 }
 ry+=dy;
 rx = 0;
 buffer+=gx_displayprop.cbyPitch >> 1;
    }

    GXEndDraw();