Displaying an Image

As soon an image is loaded it can be displayed on screen. The simplest way to do this is to use the IG_dspl_image_draw() function. In our sample this function is called in drawRect method of main view class.

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- (void)drawRect:(NSRect)dirtyRect { if(IG_image_is_valid(hIGear)) { // Get device context CGContextRef myContext = [[NSGraphicsContext currentContext] graphicsPort]; if([NSGraphicsContext currentContextDrawingToScreen]) // Draw the image to the screen IG_dspl_image_draw(hIGear, 0, (__bridge HWND)self, (HDC)myContext, NULL); else // Print the image IG_dspl_image_print(hIGear, 0, (HDC)myContext, FALSE); } }

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- (void)drawRect:(NSRect)dirtyRect
{
    if(IG_image_is_valid(hIGear))
    {
        // Get device context
        CGContextRef myContext = [[NSGraphicsContext currentContext] graphicsPort];
        if([NSGraphicsContext currentContextDrawingToScreen])
            // Draw the image to the screen
            IG_dspl_image_draw(hIGear, 0, (__bridge HWND)self, (HDC)myContext, NULL);
        else
            // Print the image
            IG_dspl_image_print(hIGear, 0, (HDC)myContext, FALSE);
    }
}

Here is the sample application with a 24-bit image loaded: