Re: Make client area of frame view a certain (fixed) size (AdjustWindowRectEx problem)
"WP" <invalid@invalid.invalid> wrote in message
news:6fc1unFam9enU1@mid.individual.net...
Mark Salsbery [MVP] wrote:
"WP" <invalid@invalid.invalid> wrote in message
news:6fc02iFaqbcdU1@mid.individual.net...
Hello, I'm trying to port a program written in raw Win32 (so I can ask
for help regarding it here) to MFC and I've run into a problem. The
program is supposed to be fixed in size and the client area must be of
size 400 * 400. The Win32-program uses AdjustWindowRectEx() to calculate
the needed width and height that should be passed to CreateWindow() when
the main window (which is, in fact, the only window in the program) is
created and that works fine.
My MFC version is an SDI-program without doc/view support but the frame
window does have a view. So I tried to call ::AdjustWindowRectEx() in
PreCreateWindow() in the frame but the rect contains garbage values
after the call...The styles I'm passing are those found in the
CREATESTRUCT (style and dwExStyle). I also tried to hardcode the styles:
WS_CAPTION | WS_BORDER | WS_MINIMIZEBOX | WS_SYSMENU and 0 for the
extended styles, but the rect still contains garbage after the call...
Can you post the code? What is AdjustWindowRectEx() returning?
Mark
Yeah, you're right. Too little information in my question. The reason I
didn't post any code is because it's really simple. Anyway, here is the
full PreCreateWindow in the frame. ::AdjustWindowRectEx() returns 1 but it
contains garbage values afterwards, values that seem uninitialized to me
(they just contain what bits happens to be in the memory where they are
located).
BOOL DoubleBufferingMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
VERIFY(CFrameWnd::PreCreateWindow(cs));
::RECT rect;
**********************************************
You need to initialize the rect before passing it to ::AdjustWindowRectEx()
rect.left = 0;
rect.top = 0;
rect.right = 400;
rect.bottom = 400;
**********************************************
BOOL b = ::AdjustWindowRectEx(&rect, WS_CAPTION | WS_BORDER |
WS_MINIMIZEBOX | WS_SYSMENU, 0, TRUE);
cs.cx = 400;
cs.cy = 400;
**********************************************
Then use the adjusted rect values:
cs.cx = rect.right - rect.left;
cs.cy = rect.bottom - rect.top;
Mark
--
Mark Salsbery
Microsoft MVP - Visual C++
**********************************************
cs.lpszClass = AfxRegisterWndClass(0);
return TRUE;
}
The way I set cx and cy now is just temporary until I can calculate them
properly.
- Eric (WP)