why my Win Api closing whole program after being used

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so, i have a working interface, compiled in dll and which is called from a CAD system. the problem is after i click OK or CANCEL on the dialog box it just exit the CAD system.

here is the code

C++

/* These include files are needed for the following template code.            */
#include <stdio.h> 
#include <uf.h>
#include <uf_defs.h>
#include <uf_exit.h>
#include <uf_ui.h>
#include <uf_styler.h>
#include <uf_mb.h> 
#include <D:\litter\litter.h>
HWND hdialog;
HINSTANCE ghInstance;
HWND edit;

TCHAR FolderName[MAX_PATH];
TCHAR c[MAX_PATH];

BOOL t;



void SetFont(HWND hwnd,LPTSTR FontName,int FontSize)
{
	
	HFONT hf;
	LOGFONT lf={0};
	HDC hdc=GetDC(hwnd);
	
	GetObject(GetWindowFont(hwnd),sizeof(lf),&lf);
	lf.lfWeight = FW_REGULAR;
	lf.lfHeight = (LONG)FontSize;
	lstrcpy( lf.lfFaceName, FontName );
	hf=CreateFontIndirect(&lf);
	SetBkMode(hdc,OPAQUE);
	SendMessage(hwnd,WM_SETFONT,(WPARAM)hf,TRUE);
	ReleaseDC(hwnd,hdc);
   
}


int __stdcall BrowseCallbackProc(HWND  hwnd,UINT  uMsg,LPARAM  lParam,LPARAM  lpData)
{


	if(uMsg==BFFM_INITIALIZED)
	{
		
		RECT ListViewRect,Dialog;
	
		edit=CreateWindowEx(0,"EDIT","",WS_CHILD|WS_VISIBLE|WS_BORDER|ES_AUTOHSCROLL,0,100,100,50,hwnd,0,ghInstance,NULL);
		HWND caption=CreateWindowEx(0,"STATIC","You have selected the folder :",WS_CHILD|WS_VISIBLE|WS_CLIPCHILDREN,0,100,100,50,hwnd,0,ghInstance,NULL);
		HWND ListView=FindWindowEx(hwnd,NULL,"SysTreeView32",NULL);

		
		GetWindowRect(hwnd,&Dialog);
		GetWindowRect(ListView,&ListViewRect);

		
		SetWindowPos(ListView,0,(ListViewRect.left-Dialog.left) ,(ListViewRect.top-Dialog.top )-20,290,170,0);
	
		SetWindowPos(edit,HWND_BOTTOM,(ListViewRect.left-Dialog.left),(ListViewRect.top-Dialog.top )+170,290,18,SWP_SHOWWINDOW);
		SetWindowPos(caption,HWND_BOTTOM,(ListViewRect.left-Dialog.left),(ListViewRect.top-Dialog.top )+155,290,14,SWP_SHOWWINDOW);
        



	
		SetFont(caption,"MS Sans Serif",12);
		SetFont(edit,"MS Sans Serif",12);
		
	}

	
	if  (uMsg==BFFM_SELCHANGED)
	{
		t = SHGetPathFromIDList((ITEMIDLIST*)lParam, c);
            
		
		SetWindowText(edit,c);
		
    }
	
	return 0;
}


BOOL CALLBACK MainDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	if(message==WM_QUIT||message==WM_CLOSE)
		PostQuitMessage(0);
		

	if(message==WM_INITDIALOG)
	{
		
		hdialog=hDlg;
		
		RECT rc;

		GetWindowRect(hDlg,&rc); 
		int w=rc.right-rc.left, h=rc.bottom-rc.top;
		int cx=GetSystemMetrics(SM_CXSCREEN)/2, cy=GetSystemMetrics(SM_CYSCREEN)/2;
		MoveWindow(hDlg,cx-w/2,cy-h/2,w,h,FALSE);
		SendMessage(hDlg, WM_COMMAND, IDOK, 0);
      
	}

	if(message==WM_COMMAND)
	{
		if((LOWORD(wParam))==IDOK)
		{
			
			TCHAR dname[MAX_PATH];
			IMalloc *imalloc; SHGetMalloc(&imalloc);
			BROWSEINFO bi; ZeroMemory(&bi,sizeof(bi));
			   
			bi.hwndOwner=hDlg;
			bi.pszDisplayName=dname;
			bi.lpszTitle = TEXT("Choose Directory");
			   
			#define BIF_NONEWFOLDERBUTTON  0x0200
			   
			bi.ulFlags = BIF_NONEWFOLDERBUTTON|BIF_RETURNONLYFSDIRS;
			bi.lpfn = BrowseCallbackProc;
			ITEMIDLIST *pidl = SHBrowseForFolder(&bi);
               
			   
			if (pidl!=NULL)
				MessageBox(hDlg,c,"Selected Folder",0);
			
			
			
			SendMessage(hDlg, WM_COMMAND, IDCANCEL, 0);
	
			
			

			imalloc->Free(pidl);
			imalloc->Release();
			

		}

		if((LOWORD(wParam))==IDCANCEL)
		{
			
			PostQuitMessage(0);
			
			EndDialog(hDlg,0);
		}
	}
			
	return 0;

}

Posted 18-Apr-14 0:36am

bazelboday

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OriginalGriff · Answer 1 · 2014-04-18T01:01:00

Probably, it's a problem with how one of your methods is being called - if the parameters don't match, you can easily get a stack corruption problem and the whole thing falls over.

Check teh way you call the DLL and compare that with your actual methods - but we can't help much with just that code. Have you tried calling it from a different application to see if it works in isolation?

bazelboday · Answer 2 · 2014-04-22T01:07:00

Solution 3

i've worked it out by removing this command PostQuitMessage(0);

Posted 22-Apr-14 1:07am

bazelboday

bazelboday · Answer 3 · 2014-04-18T02:18:00

its working fine by itself ,

here how it works : first apears dialog box with 1 button - "ShowDialog", after u click button u get the dialog box(SHBrowseForFolder) wich allows you to select the folder root, then when u click OK or CANCEL u will get the window with button "ShowDialog" again.

i want only the BrowseForFolder dialog box on screen, without that little menu, so i putted in
this code :

SendMessage(hDlg, WM_COMMAND, IDOK, 0);
SendMessage(hDlg, WM_COMMAND, IDCANCEL, 0);

so the little menu vanished, i thought the problem is over, but when i compiled it in dll
and called it i recieve the problem i described above

so if u delete that code it's all working but i dont like that menu, want to drop it

here is that project [^]

why my Win Api closing whole program after being used

3 solutions

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Solution 3

Solution 2

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