GDI Rectangles

[Darklighter]

So I started messing around with GDI, and I created this magnificent piece of art. The green rectangle is supposed to be located at 10 pixels from the borders at all sides. Here's my code for the rectangle displaying part:

RECT rc;
HBRUSH fillColor = CreateSolidBrush ( RGB ( 0, 255, 0 ) );

rc.left   = 10;
rc.top    = 10;
rc.right  = 490;
rc.bottom = 490;

FillRect ( hDc, &rc, fillColor );

The size of the window is 500x500 pixels. Logically speaking, the upper-left corner of the rectangle should be at 10x10 pixels and the lower-right corner at 490x490 pixels, right? Somehow, that's not what is being displayed... Any help?

Thanks.

[Ken Fitlike]

>>The size of the window is 500x500 pixels.<<

That includes the borders, caption, any menu etc. Use GetClientRect to get the client area dimensions and InflateRect to adjust the dimensions of your square

[Darklighter]

That worked fine. Thanks!

This is my code (I found this clearer than InflateRect):

RECT rc;
HBRUSH fillColor = CreateSolidBrush ( RGB ( 0, 255, 0 ) );

GetClientRect ( hWnd, &rc ); 

rc.left   += 10;
rc.top    += 10;
rc.right  -= 10;
rc.bottom -= 10;

FillRect ( hDc, &rc, fillColor );

[Ken Fitlike]

With InflateRect:

RECT rc;
HBRUSH fillColor = CreateSolidBrush ( RGB ( 0, 255, 0 ) );

GetClientRect ( hWnd, &rc ); 

InflateRect(&rc,-10,-10);

FillRect ( hDc, &rc, fillColor );

But whatever you are comfortable using is probably best.