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CreateMDIWindow & Toolbar

 
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smartz993
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Joined: 20 Jun 2006
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PostPosted: Fri Oct 02, 2009 1:20 pm    Post subject: CreateMDIWindow & Toolbar Reply with quote
Main Problem:

I'm working on a project in which i want to use MDI windows to make it multi-windowed within the parent window. I've never done it before, so i was looking at some examples online and it seems pretty easy. It worked so far, but there is a problem. When i try to set a toolbar to the window, the MDIClient window fucks with it..

I was going to handle WM_MOVE and stop the windows from coming past the toolbar, but maximizing the MDI window will still fuck with it.

Any suggestions?


Code:
#include <windows.h>
#include <commctrl.h>
#include <TCHAR.h>
#include "resource.h"
#include <string>

typedef std::basic_string<TCHAR> ustring;

#pragma comment(lib, "comctl32.lib")

#define ID_TOOLBAR 106

static HINSTANCE basead;
static HWND hMDIFrame;
static HWND hMDIClient;
static int current = 0;

static LRESULT CALLBACK MDIFrameWndProc(HWND, UINT, WPARAM, LPARAM);
static LRESULT CALLBACK MDIChildWndProc(HWND, UINT, WPARAM, LPARAM);

void AddToolbarButton(const HWND,TBBUTTON&,int,const ustring&,
                 BYTE style=TBSTYLE_BUTTON,DWORD_PTR data=0,int cmd=-1,
                 BYTE state=TBSTATE_ENABLED);

enum {
   IDC_TOOLBAR=200,
};


void StartCommonControls(DWORD flags)
{
   //load the common controls dll, specifying the type of control(s) required
   INITCOMMONCONTROLSEX iccx;
   iccx.dwSize=sizeof(INITCOMMONCONTROLSEX);
   iccx.dwICC=flags;
   InitCommonControlsEx(&iccx);
}


int WINAPI WinMain(HINSTANCE handle, HINSTANCE hinst, LPSTR, int)
{

   basead = handle;

   WNDCLASSEX wcex;
   wcex.cbSize = sizeof(WNDCLASSEX);
   wcex.style   = CS_HREDRAW | CS_VREDRAW;
   wcex.lpfnWndProc = MDIFrameWndProc;
   wcex.cbClsExtra = 0;
   wcex.cbWndExtra = 0;
   wcex.hInstance   = basead;
   wcex.hIcon   = LoadIcon(basead, IDI_APPLICATION);
   wcex.hCursor = LoadCursor(0, IDC_ARROW);
   wcex.hbrBackground   = 0;
   wcex.lpszMenuName = L"IDRES_MENU";
   wcex.lpszClassName   = L"MDIFRAMEWINDOW";
   wcex.hIconSm = 0;
   RegisterClassEx(&wcex);

   wcex.cbSize = sizeof(WNDCLASSEX);
   wcex.style   = CS_HREDRAW | CS_VREDRAW;
   wcex.lpfnWndProc = MDIChildWndProc;
   wcex.cbClsExtra = 0;
   wcex.cbWndExtra = sizeof(int);
   wcex.hInstance   = basead;
   wcex.hIcon   = LoadIcon(basead, IDI_APPLICATION);
   wcex.hCursor = LoadCursor(0, IDC_ARROW);
   wcex.hbrBackground   = (HBRUSH)GetStockObject(WHITE_BRUSH);
   wcex.lpszMenuName = 0;
   wcex.lpszClassName   = L"MDICHILDWINDOW";
   wcex.hIconSm = 0;
   RegisterClassEx(&wcex);

   DWORD style = WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_VISIBLE;
   int x = CW_USEDEFAULT; int y = CW_USEDEFAULT;
   int w = CW_USEDEFAULT; int h = CW_USEDEFAULT;
   hMDIFrame = CreateWindow(L"MDIFRAMEWINDOW", L"Main Window", style, x, y, w, h, 0, 0, basead, 0);

   ShowWindow(hMDIFrame, SW_SHOW);
   UpdateWindow(hMDIFrame);

   MSG msg;
   while(GetMessage(&msg, 0, 0, 0)) {
      if(!TranslateMDISysAccel(hMDIClient, &msg)) {
         TranslateMessage(&msg);
         DispatchMessage(&msg);
      }
   }
}

void AddToolbarButton(const HWND hTb,TBBUTTON& tbb,int bmp,const ustring& txt,
                 BYTE style,DWORD_PTR data,int cmd,BYTE state)
{
   tbb.iBitmap=bmp;
   tbb.idCommand=cmd;
   tbb.fsState=state;
   tbb.fsStyle=style;
   tbb.dwData=data;
   tbb.iString=SendMessage(hTb,TB_ADDSTRING,0,reinterpret_cast<LPARAM>(txt.c_str()));
}

HWND CreateToolbar(const HWND hParent,const HINSTANCE hInst,DWORD dwStyle,
               const RECT& rc,const int id)
{
   dwStyle|=WS_CHILD|WS_VISIBLE;
   return CreateWindowEx(0,                  //extended styles
      TOOLBARCLASSNAME,   //control 'class' name
      0,                  //control caption
      dwStyle,            //wnd style
      rc.left,            //position: left
      rc.top,             //position: top
      rc.right,           //width
      rc.bottom,          //height
      hParent,            //parent window handle
      //control's ID
      reinterpret_cast<HMENU>(static_cast<INT_PTR>(id)),
      hInst,              //instance
      0);                 //user defined info
}


int OnCreate(const HWND hwnd,CREATESTRUCT *cs)
{
   //handles the WM_CREATE message of the main, parent window; return -1 to fail
   //window creation
   RECT rc={0,0,0,0};  //set dimensions in parent window's WM_SIZE handler
   StartCommonControls(ICC_BAR_CLASSES);

   HWND hToolbar=CreateToolbar(hwnd,cs->hInstance,/*TBSTYLE_FLAT|CCS_ADJUSTABLE|WS_OVERLAPPED|
      CCS_NODIVIDER*/ TBSTYLE_FLAT | WS_CHILD | WS_VISIBLE ,rc,IDC_TOOLBAR);

   SetWindowLongPtr(hwnd,GWLP_USERDATA,reinterpret_cast<LONG_PTR>(hToolbar));

   TBADDBITMAP tbAddBmp={0};
   TBBUTTON tbb[5];

   //setup and add buttons
   SendMessage(hToolbar,TB_BUTTONSTRUCTSIZE,
      static_cast<WPARAM>(sizeof(TBBUTTON)),0);
   //add images
   tbAddBmp.hInst=HINST_COMMCTRL;
   tbAddBmp.nID=IDB_STD_SMALL_COLOR;
   SendMessage(hToolbar,TB_ADDBITMAP,0,reinterpret_cast<WPARAM>(&tbAddBmp));

   //add buttons
   AddToolbarButton(hToolbar,tbb[0],STD_FILENEW,_T("New"));           
   AddToolbarButton(hToolbar,tbb[1],STD_FILEOPEN,_T("Open"));
   AddToolbarButton(hToolbar,tbb[2],STD_FILESAVE,_T("Save"));
   AddToolbarButton(hToolbar,tbb[3],STD_PRINTPRE,_T("PrintPre"));           
   AddToolbarButton(hToolbar,tbb[4],STD_PRINT,_T("Print"));

   SendMessage(hToolbar,TB_ADDBUTTONS,5,
      reinterpret_cast<LPARAM>(&tbb[0]));

   return 0;
}

void OnSize(const HWND hwnd,int cx,int cy,UINT flags)
{
   //get the header control handle which has been previously stored in the user
   //data associated with the parent window.
   HWND hToolbar=reinterpret_cast<HWND>(static_cast<LONG_PTR>
      (GetWindowLongPtr(hwnd,GWLP_USERDATA)));

   //resize tab common control so that it always fills parent's client area
   MoveWindow(hToolbar,0,0,cx,0,TRUE);
}

LRESULT CALLBACK MDIFrameWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
   switch(message)
   {
   case WM_CREATE:
      {
         OnCreate(hWnd,reinterpret_cast<CREATESTRUCT*>(lParam));

         // create client window
         CLIENTCREATESTRUCT ccs = { 0, current++ };
         DWORD style = WS_CHILD | WS_CLIPCHILDREN | WS_VSCROLL | WS_HSCROLL;
         hMDIClient = CreateWindow(L"MDICLIENT", 0, style, 0, 0, 0, 0, hWnd, (HMENU)0xCAC, basead, (LPSTR)&ccs);
         ShowWindow(hMDIClient, SW_SHOW);

         return DefFrameProc(hWnd, hMDIClient, message, wParam, lParam);
      }

      case WM_SIZE:
      {
         OnSize(hWnd,LOWORD(lParam),HIWORD(lParam),static_cast<UINT>(wParam));
         return DefFrameProc(hWnd, hMDIClient, message, wParam, lParam);
      }


   case WM_COMMAND:
      {
         // File->New
         if(LOWORD(wParam) == IDC_NEW)
         {
            CreateMDIWindow( L"MDICHILDWINDOW", L"A WINDOW!!!", WS_VSCROLL, 100, 100, 500, 500, hMDIClient, basead, NULL );
         }
         // File->Exit
         else
            if(LOWORD(wParam) == IDC_EXIT)
               SendMessage(hWnd, WM_CLOSE, 0, 0);

         return DefFrameProc(hWnd, hMDIClient, message, wParam, lParam);
      }

   case WM_DESTROY:
      {
         PostQuitMessage(0);
         break;
      }
   default:
      return DefFrameProc(hWnd, hMDIClient, message, wParam, lParam);
   }
   return 0;
}

LRESULT CALLBACK MDIChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
   return DefMDIChildProc(hWnd, message, wParam, lParam);
}


Code put together from various places on the net, not mine. - just testing it for now.
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Slugsnack
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PostPosted: Fri Oct 02, 2009 4:07 pm    Post subject: Reply with quote
create the toolbar before the MDI window
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smartz993
I post too much
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Joined: 20 Jun 2006
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PostPosted: Fri Oct 02, 2009 8:38 pm    Post subject: Reply with quote
Slugsnack wrote:
create the toolbar before the MDI window


If you take a look at WM_CREATE, you'll see that's what i am doing.
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Slugsnack
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PostPosted: Fri Oct 02, 2009 8:45 pm    Post subject: Reply with quote
handle the WM_SIZE case. that's called with wParam as SIZE_MAXIMIZED on maximize. so for that particular case, you could do SetWindowPos on the child MDI so it's created just below the toolbar with height of 'main window client height - toolbar height'

for SIZE_RESTORED, you can GetWindowRect of the child window and make sure it's y is not less than height of toolbar
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smartz993
I post too much
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Joined: 20 Jun 2006
Posts: 2013
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PostPosted: Fri Oct 02, 2009 8:51 pm    Post subject: Reply with quote
Slugsnack wrote:
handle the WM_SIZE case. that's called with wParam as SIZE_MAXIMIZED on maximize. so for that particular case, you could do SetWindowPos on the child MDI so it's created just below the toolbar with height of 'main window client height - toolbar height'

for SIZE_RESTORED, you can GetWindowRect of the child window and make sure it's y is not less than height of toolbar


All of that is unnecessary, and would have to be a temporary solution. It wouldn't look as nice, and i'm sure there is a better way.
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