I need the program to check/uncheck treeview checkboxes. The checkboxes
appear on the treeview. I can check/uncheck them by hand. But I can't
get TreeView_SetCheckState to check them. I compile with mingw
cross-compiler. I included a test program below.

Thanks,
Daniel Goldman

#define _WIN32_IE 0x0500

#include <windows.h>
#include <windowsx.h>
#include <commctrl.h>

HWND Tree_g;
HWND MainWin_g ;
HINSTANCE HInstance_g ;

#if !defined TreeView_SetCheckState
#define TreeView_SetCheckState(hwndTV, hti, fCheck) \
TreeView_SetItemState(hwndTV, hti, \
INDEXTOSTATEIMAGEMASK((fCheck)?2:1), TVIS_STATEIMAGEMASK)
#endif /* #if !defined TreeView_SetCheckState */

LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
PAINTSTRUCT ps ;
HTREEITEM hItem ;
TVITEM tvi;
TVINSERTSTRUCT tvis;

switch (message)
{
case WM_CREATE:
return 0 ;

case WM_PAINT :
hdc = BeginPaint (hwnd, &ps) ;

TreeView_DeleteAllItems (Tree_g);

memset (&tvis, 0, sizeof (tvis));
memset (&tvi, 0, sizeof (tvi));
tvi.mask |= TVIF_TEXT;
tvi.pszText = "1";

tvis.hParent = TVI_ROOT;
tvis.hInsertAfter = TVI_LAST;
tvis.item = tvi;

hItem = TreeView_InsertItem (Tree_g, &tvis);
TreeView_SetCheckState (Tree_g, hItem, TRUE);

EndPaint (hwnd, &ps) ;

return 0 ;

case WM_DESTROY :
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("chkbox2") ;
MSG msg ;
WNDCLASS wndclass ;
DWORD dwStyle;

wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;

HInstance_g = hInstance;
RegisterClass (&wndclass);

InitCommonControls();

MainWin_g = CreateWindow (szAppName, TEXT ("chkbox2"),
WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL) ;

Tree_g = CreateWindow (WC_TREEVIEW, NULL,
TVS_HASBUTTONS | WS_VISIBLE | WS_BORDER | WS_CHILD,
10, 10, 100, 100, MainWin_g, (HMENU) 3, HInstance_g, NULL) ;

dwStyle = (DWORD) GetWindowLongPtr (Tree_g, GWL_STYLE);
dwStyle |= TVS_CHECKBOXES;
SetWindowLongPtr (Tree_g, GWL_STYLE, (LONG_PTR) dwStyle);

ShowWindow (MainWin_g, iCmdShow) ;
UpdateWindow (MainWin_g) ;

while (GetMessage (&msg, NULL, 0, 0)) {
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}

"dan" <dagoldman@yahoo.com> wrote in message
news:1167464237.609656.183530@v33g2000cwv.googlegr oups.com...
That seems to work on my system.

Barry wrote:
Thanks for testing. Do you mean the checkbox is checked when program
starts? All by itself? That's what I'm trying to do.

What compiler are you using? Today I compiled directly on Windows
(mingw) and checkbox still not checked. Maybe it's a problem with
mingw.

Could anyone else help verify by running and see if checkbox is
checked? And let me know what compiler you used?

Thanks,
Daniel

"dan" <dagoldman@yahoo.com> wrote in message
news:1167502246.853885.211510@73g2000cwn.googlegro ups.com...
The box was checked when the program started and unchecked
when I changed you statement to check it to FALSE.

I was using gcc 3.4.2 (mingw special) compiled and executed on ME.

One thing I have noticed that show up using mingw with XP systems
as a target is the necessity to explicitly initalise the structures. But,
your
problem may be your cross compile environment.

"Barry" <barryg@nullhighstream.net> wrote in message
news:12pdeer1kv48ee1@corp.supernews.com...
In case it wasn't clear my comment on explicitly initilize in your bit
of code would start with a memset, ZeroMemory of the tvis struct
and then making sure you fill all fields.

"Barry" <barryg@nullhighstream.net> wrote in message
news:12pdeuj4iatkpa1@corp.supernews.com...
Never mind :-). I see you did this when you smacked tvi.

Barry wrote:
The linux cross-compiler says gcc version 3.4.2 (mingw-special)
The windows compiler says gcc version 3.2.3 (mingw special 20030504-1)

Thanks for being so detailed (more detailed than I was) about compiler
version. My windows mingw is out-of-date. Maybe something got fixed
between versions. I'll download the current 3.4.2 windows mingw and
try.

Daniel

dan wrote:
I downloaded the current 3.4.2 windows mingw. The box is checked now.
I'll go elsewhere to figure out why the cross-compiler doesn't check
the box.

Thanks for solving problem.

Daniel

"dan" <dagoldman@yahoo.com> wrote in message
news:1167515741.267703.102260@s34g2000cwa.googlegr oups.com...
I didn't do anything that solved your problem.

You did the exact thing someone should do when asking for
help on a newsgroup of this sort. You posted a small
compilable program which exhibited the problem. I just checked
it in one similar environment for you :-). Little help like that is
often a good start.

Barry

On Dec 30 2006, 2:30 pm, "Barry" <bar...@nullhighstream.net> wrote:
I upgraded my debian linux computer from sarge to etch (a bother
because dist-upgrade did not work), which let me install the newest
3.4.5 version of mingw cross-compiler (new version wouldn't install to
sarge), which solved the problem (TreeView_SetCheckState works now).

Daniel