Re: Converting a dialog based app to - - - What?
"Harvey" <harveyab@juno.com> wrote in message
news:1175650611.635601.286320@w1g2000hsg.googlegroups.com...
My current status is that if I have a caption bar (with icon, name,
system menu, min-, max- and close buttons) everything is as I want in
the taskbar, except that I don't want the caption bar on the window.
So adding this line at the end of the Init() function:
VERIFY( ModifyStyle( WS_CAPTION, 0, 0 ));
causes the taskbar thing (do you call it an icon even when it doesn't
have one?) to not minimize the window when you click on it, like other
windows. The Icon, name and system menu are still there and work
(good), but without the above line, the window also minimizes when the
task bar thing is clicked.
This is probably because WM_SYSMENU is not specified, and the
minimize/restore/maximize commands are specified in that.
Instead of calling ModifyStyle() after the window is created, here is how I
create a captionless window from the getgo, using the WS_POPUP style:
BOOL CMainFrame::Init ()
{
// Register window class
WNDCLASS wc;
wc.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = AfxWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = AfxGetInstanceHandle();
wc.hIcon = AfxGetApp()->LoadIcon (IDR_MAINFRAME);
wc.hCursor = NULL;
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = MAINFRAME_CLASS;
BOOL bOK = AfxRegisterClass (&wc);
if (!bOK)
return FALSE;
// Center window in workspace
CRect rect;
::SystemParametersInfo (SPI_GETWORKAREA, 0, &rect, 0);
rect.left = (rect.Width() - m_sizeBackground.cx) / 2; //
m_sizeBackground is desired size of window
rect.right = rect.left + m_sizeBackground.cx;
rect.top = (rect.Height() - m_sizeBackground.cy) / 2; //
m_sizeBackground is desired size of window
rect.bottom = rect.top + m_sizeBackground.cy;
DWORD dwExStyle = 0;
bOK = CreateEx ( dwExStyle, MAINFRAME_CLASS,
_T("This is the text going into the taskbar
button"),
WS_POPUP | WS_SYSMENU, rect, NULL, 0 );
if (!bOK)
return FALSE;
return bOK;
}
Further, you need to do this:
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CViewBackgroundClose::OnCreate(lpCreateStruct) == -1) //
CViewBackgroundClose is the ancestor class of CMainFrame
return -1;
// Necessary to set icons, or else Alt+Tab task switcher shows white
icon for this app!
m_hIconLarge = (HICON) LoadImage (AfxGetResourceHandle(),
MAKEINTRESOURCE(IDR_MAINFRAME), IMAGE_ICON, 32, 32, LR_DEFAULTCOLOR);
m_hIconSmall = (HICON) LoadImage (AfxGetResourceHandle(),
MAKEINTRESOURCE(IDR_MAINFRAME), IMAGE_ICON, 16, 16, LR_DEFAULTCOLOR);
SetIcon (m_hIconLarge, TRUE); // Set big icon
SetIcon (m_hIconSmall, FALSE); // Set small icon
}
One other odd behaviour is that the caption bar remains on the window
until a resize. (I can deal with that).
I think there is an API called UpdateCaption() or DrawCaptionBar() or
something like that that you need to do in this case, but I would just redo
your code to create a WS_POPUP window instead and not worry about the
caption bar at all.
So... How can I know when the user clicks on the task bar thing (and
programatically minimize that way)?
Doing it this way the system will minimize for you, using the standard
minimize logic in the WM_SYSMENU.
-- David