hi there, i am trying to get my program to display a different bitmap in four different child windows of my win32 C program but i cant seem to do it. Any idea's? I have got the information so far off of the forgers win32 tutorial.
#include <windows.h>
#include <commctrl.h>
#include "resource.h"
const char g_szClassName[] = "myWindowClass";
const char g_szChildClassName[] = "myMDIChildWindowClass";
HBITMAP g_hbmBall = NULL;
HWND g_hMDIClient = NULL;
HWND g_hMainWindow = NULL;
BOOL CALLBACK AboutDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
switch(Message)
{
case WM_INITDIALOG:
return TRUE;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case IDOK:
EndDialog(hwnd, IDOK);
break;
case IDCANCEL:
EndDialog(hwnd, IDCANCEL);
break;
}
break;
default:
return FALSE;
}
return TRUE;
}
//////////////////////////////////////////////////////////////////?/////////Default Child Window Class/////////////////
////////////////////////////////////////////////////
/////////Default Child Window Class/////////////////
////////////////////////////////////////////////////
HWND CreateNewMDIChild(HWND hMDIClient)
{
MDICREATESTRUCT mcs;
HWND hChild;
mcs.szTitle = "test";
mcs.szClass = g_szChildClassName;
mcs.hOwner = GetModuleHandle(NULL);
mcs.x = mcs.cx = CW_USEDEFAULT;
mcs.y = mcs.cy = CW_USEDEFAULT;
mcs.style = MDIS_ALLCHILDSTYLES;
hChild = (HWND)SendMessage(hMDIClient, WM_MDICREATE, 0, (LONG)&mcs);
if(!hChild)
{
MessageBox(hMDIClient, "MDI Child creation failed.", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
}
return hChild;
}
/////////KEY GENERATION Child Window Class/////////////////
////////////////////////////////////////////////////
HWND CreateNewMDIChildkey(HWND hMDIClient)
{
MDICREATESTRUCT mcs;
HWND hChild;
mcs.szTitle = "Pseudo Key Generation";
mcs.szClass = g_szChildClassName;
mcs.hOwner = GetModuleHandle(NULL);
mcs.x = mcs.cx = CW_USEDEFAULT;
mcs.y = mcs.cy = CW_USEDEFAULT;
mcs.style = MDIS_ALLCHILDSTYLES;
hChild = (HWND)SendMessage(hMDIClient, WM_MDICREATE, 0, (LONG)&mcs);
if(!hChild)
{
MessageBox(hMDIClient, "MDI Child creation failed.", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
}
return hChild;
}
/////////CTAK Child Window Class/////////////////
////////////////////////////////////////////////////
HWND CreateNewMDIChildctak(HWND hMDIClient)
{
MDICREATESTRUCT mcs;
HWND hChild;
mcs.szTitle = "CTAK Key Distribution";
mcs.szClass = g_szChildClassName;
mcs.hOwner = GetModuleHandle(NULL);
mcs.x = mcs.cx = CW_USEDEFAULT;
mcs.y = mcs.cy = CW_USEDEFAULT;
mcs.style = MDIS_ALLCHILDSTYLES;
hChild = (HWND)SendMessage(hMDIClient, WM_MDICREATE, 0, (LONG)&mcs);
if(!hChild)
{
MessageBox(hMDIClient, "MDI Child creation failed.", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
}
return hChild;
}
/////////KAK Child Window Class/////////////////
////////////////////////////////////////////////////
HWND CreateNewMDIChildkak(HWND hMDIClient)
{
MDICREATESTRUCT mcs;
HWND hChild;
mcs.szTitle = "KAK Key Distribution";
mcs.szClass = g_szChildClassName;
mcs.hOwner = GetModuleHandle(NULL);
mcs.x = mcs.cx = CW_USEDEFAULT;
mcs.y = mcs.cy = CW_USEDEFAULT;
mcs.style = MDIS_ALLCHILDSTYLES;
hChild = (HWND)SendMessage(hMDIClient, WM_MDICREATE, 0, (LONG)&mcs);
if(!hChild)
{
MessageBox(hMDIClient, "MDI Child creation failed.", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
}
return hChild;
}
/////////FULL ENCRYPTION Child Window Class/////////////////
////////////////////////////////////////////////////
HWND CreateNewMDIChildcryp(HWND hMDIClient)
{
MDICREATESTRUCT mcs;
HWND hChild;
mcs.szTitle = "Full Symmetric Encryption";
mcs.szClass = g_szChildClassName;
mcs.hOwner = GetModuleHandle(NULL);
mcs.x = mcs.cx = CW_USEDEFAULT;
mcs.y = mcs.cy = CW_USEDEFAULT;
mcs.style = MDIS_ALLCHILDSTYLES;
hChild = (HWND)SendMessage(hMDIClient, WM_MDICREATE, 0, (LONG)&mcs);
if(!hChild)
{
MessageBox(hMDIClient, "MDI Child creation failed.", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
}
return hChild;
}
/////////////////////////////////////////////////////////////////////////////
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CREATE:
{
HWND hTool;
TBBUTTON tbb[4];
TBADDBITMAP tbab;
HWND hStatus;
int statwidths[] = {100, -1};
CLIENTCREATESTRUCT ccs;
// Create MDI Client
// Find window menu where children will be listed
ccs.hWindowMenu = GetSubMenu(GetMenu(hwnd), 2);
ccs.idFirstChild = ID_MDI_FIRSTCHILD;
g_hMDIClient = CreateWindowEx(WS_EX_CLIENTEDGE, "mdiclient", NULL,
WS_CHILD | WS_CLIPCHILDREN | WS_VSCROLL | WS_HSCROLL | WS_VISIBLE,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
hwnd, (HMENU)IDC_MAIN_MDI, GetModuleHandle(NULL), (LPVOID)&ccs);
if(g_hMDIClient == NULL)
MessageBox(hwnd, "Could not create MDI client.", "Error", MB_OK | MB_ICONERROR);
// Create Toolbar
hTool = CreateWindowEx(0, TOOLBARCLASSNAME, NULL, WS_CHILD | WS_VISIBLE, 0, 0, 0, 0,
hwnd, (HMENU)IDC_MAIN_TOOL, GetModuleHandle(NULL), NULL);
if(hTool == NULL)
MessageBox(hwnd, "Could not create tool bar.", "Error", MB_OK | MB_ICONERROR);
// Send the TB_BUTTONSTRUCTSIZE message, which is required for
// backward compatibility.
SendMessage(hTool, TB_BUTTONSTRUCTSIZE, (WPARAM)sizeof(TBBUTTON), 0);
tbab.hInst = HINST_COMMCTRL;
tbab.nID = IDB_STD_SMALL_COLOR;
SendMessage(hTool, TB_ADDBITMAP, 0, (LPARAM)&tbab);
///////////MENU BUTTONS ALONG THE TOP///////////////
/////////////////////////
ZeroMemory(tbb, sizeof(tbb));
tbb[0].iBitmap = "NULL";
tbb[0].iString = "Key Generation";
tbb[0].fsState = TBSTATE_ENABLED;
tbb[0].fsStyle = TBSTYLE_BUTTON;
tbb[0].idCommand = ID_MENU_KEYGENERATION;
tbb[1].iBitmap = "NULL";
tbb[1].iString = "CTAK Distribution";
tbb[1].fsState = TBSTATE_ENABLED;
tbb[1].fsStyle = TBSTYLE_BUTTON;
tbb[1].idCommand = ID_MENU_CTAKKEYDISTRIBUTION;
tbb[2].iBitmap = "NULL";
tbb[2].iString = "KAK Distribution";
tbb[2].fsState = TBSTATE_ENABLED;
tbb[2].fsStyle = TBSTYLE_BUTTON;
tbb[2].idCommand = ID_MENU_KAKKEYDISTRIBUTION;
tbb[3].iBitmap = "NULL";
tbb[3].iString = "Full Encryption";
tbb[3].fsState = TBSTATE_ENABLED;
tbb[3].fsStyle = TBSTYLE_BUTTON;
tbb[3].idCommand = ID_MENU_FULLSYMMETRICENCRYPTION;
SendMessage(hTool, TB_ADDBUTTONS, sizeof(tbb)/sizeof(TBBUTTON), (LPARAM)&tbb);
// Create Status bar
hStatus = CreateWindowEx(0, STATUSCLASSNAME, NULL,
WS_CHILD | WS_VISIBLE | SBARS_SIZEGRIP, 0, 0, 0, 0,
hwnd, (HMENU)IDC_MAIN_STATUS, GetModuleHandle(NULL), NULL);
SendMessage(hStatus, SB_SETPARTS, sizeof(statwidths)/sizeof(int), (LPARAM)statwidths);
SendMessage(hStatus, SB_SETTEXT, 0, (LPARAM)"160285");
}
break;
case WM_SIZE:
{
HWND hTool;
RECT rcTool;
int iToolHeight;
HWND hStatus;
RECT rcStatus;
int iStatusHeight;
HWND hMDI;
int iMDIHeight;
RECT rcClient;
// Size toolbar and get height
hTool = GetDlgItem(hwnd, IDC_MAIN_TOOL);
SendMessage(hTool, TB_AUTOSIZE, 0, 0);
GetWindowRect(hTool, &rcTool);
iToolHeight = rcTool.bottom - rcTool.top;
// Size status bar and get height
hStatus = GetDlgItem(hwnd, IDC_MAIN_STATUS);
SendMessage(hStatus, WM_SIZE, 0, 0);
GetWindowRect(hStatus, &rcStatus);
iStatusHeight = rcStatus.bottom - rcStatus.top;
// Calculate remaining height and size edit
GetClientRect(hwnd, &rcClient);
iMDIHeight = rcClient.bottom - iToolHeight - iStatusHeight;
hMDI = GetDlgItem(hwnd, IDC_MAIN_MDI);
SetWindowPos(hMDI, NULL, 0, iToolHeight, rcClient.right, iMDIHeight, SWP_NOZORDER);
}
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
////////////////////////////////
///////MAIN WINDOW CASES////////
////////////////////////////////
case WM_COMMAND:
switch(LOWORD(wParam))
{
///////ABOUT CASE/////////////
case ID_HELP_ABOUT:
{
int ret = DialogBox(GetModuleHandle(NULL),
MAKEINTRESOURCE(IDD_ABOUT), hwnd, AboutDlgProc);
if(ret == -1){
MessageBox(hwnd, "Dialog failed!", "Error",
MB_OK | MB_ICONINFORMATION);
}
}
break;
///////KEY GENERATION CASE/////////////
case ID_MENU_KEYGENERATION:
CreateNewMDIChildkey(g_hMDIClient);
break;
///////CTAK KEY DISTRIBUTION CASE/////////////
case ID_MENU_CTAKKEYDISTRIBUTION:
CreateNewMDIChildctak(g_hMDIClient);
break;
///////KAK KEY DISTRIBUTION CASE/////////////
case ID_MENU_KAKKEYDISTRIBUTION:
CreateNewMDIChildkak(g_hMDIClient);
break;
///////FULL SYMMETRIC ENCRYPTION CASE/////////////
case ID_MENU_FULLSYMMETRICENCRYPTION:
CreateNewMDIChildcryp(g_hMDIClient);
break;
case ID_FILE_EXIT:
PostMessage(hwnd, WM_CLOSE, 0, 0);
break;
case ID_FILE_CLOSE:
{
HWND hChild = (HWND)SendMessage(g_hMDIClient, WM_MDIGETACTIVE,0,0);
if(hChild)
{
SendMessage(hChild, WM_CLOSE, 0, 0);
}
}
break;
case ID_WINDOW_TILE:
SendMessage(g_hMDIClient, WM_MDITILE, 0, 0);
break;
case ID_WINDOW_CASCADE:
SendMessage(g_hMDIClient, WM_MDICASCADE, 0, 0);
break;
default:
{
if(LOWORD(wParam) >= ID_MDI_FIRSTCHILD)
{
DefFrameProc(hwnd, g_hMDIClient, WM_COMMAND, wParam, lParam);
}
else
{
HWND hChild = (HWND)SendMessage(g_hMDIClient, WM_MDIGETACTIVE,0,0);
if(hChild)
{
SendMessage(hChild, WM_COMMAND, wParam, lParam);
}
}
}
}
break;
default:
return DefFrameProc(hwnd, g_hMDIClient, msg, wParam, lParam);
}
return 0;
}
LRESULT CALLBACK MDIChildWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CREATE:
{
HFONT hfDefault;
HWND hEdit;
// Create Edit Control
hEdit = CreateWindowEx(WS_EX_CLIENTEDGE, "EDIT", "",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_HSCROLL | ES_MULTILINE | ES_AUTOVSCROLL | ES_AUTOHSCROLL,
0, 0, 100, 100, hwnd, (HMENU)IDC_CHILD_EDIT, GetModuleHandle(NULL), NULL);
if(hEdit == NULL)
MessageBox(hwnd, "Could not create edit box.", "Error", MB_OK | MB_ICONERROR);
hfDefault = GetStockObject(DEFAULT_GUI_FONT);
SendMessage(hEdit, WM_SETFONT, (WPARAM)hfDefault, MAKELPARAM(FALSE, 0));
g_hbmBall = LoadBitmap(GetModuleHandle(NULL), MAKEINTRESOURCE(IDB_BALL));
}
break;
case WM_PAINT:
{
BITMAP bm;
PAINTSTRUCT ps;
HDC hdc = BeginPaint(hwnd, &ps);
HDC hdcMem = CreateCompatibleDC(hdc);
HBITMAP hbmOld = SelectObject(hdcMem, g_hbmBall);
GetObject(g_hbmBall, sizeof(bm), &bm);
BitBlt(hdc, 0, 0, bm.bmWidth, bm.bmHeight, hdcMem, 0, 0, SRCCOPY);
SelectObject(hdcMem, hbmOld);
DeleteDC(hdcMem);
EndPaint(hwnd, &ps);
}
break;
case WM_DESTROY:
DeleteObject(g_hbmBall);
PostQuitMessage(0);
break;
case WM_MDIACTIVATE:
{
HMENU hMenu, hFileMenu;
UINT EnableFlag;
hMenu = GetMenu(g_hMainWindow);
if(hwnd == (HWND)lParam)
{ //being activated, enable the menus
EnableFlag = MF_ENABLED;
}
EnableMenuItem(hMenu, 1, MF_BYPOSITION | EnableFlag);
EnableMenuItem(hMenu, 2, MF_BYPOSITION | EnableFlag);
hFileMenu = GetSubMenu(hMenu, 0);
EnableMenuItem(hFileMenu, ID_FILE_SAVEAS, MF_BYCOMMAND | EnableFlag);
EnableMenuItem(hFileMenu, ID_FILE_CLOSE, MF_BYCOMMAND | EnableFlag);
EnableMenuItem(hFileMenu, ID_FILE_CLOSEALL, MF_BYCOMMAND | EnableFlag);
DrawMenuBar(g_hMainWindow);
}
break;
///////WINDOW COMMANDS//////////
case WM_COMMAND:
switch(LOWORD(wParam))
{
///////EXIT CASE/////////////
case ID_FILE_EXIT:
PostMessage(hwnd, WM_CLOSE, 0, 0);
break;
}
break;
///////RESIZING THE WINDOW////////////
case WM_SIZE:
{
HWND hEdit;
RECT rcClient;
// Calculate remaining height and size edit
GetClientRect(hwnd, &rcClient);
hEdit = GetDlgItem(hwnd, IDC_CHILD_EDIT);
SetWindowPos(hEdit, NULL, 0, 0, rcClient.right, rcClient.bottom, SWP_NOZORDER);
}
return DefMDIChildProc(hwnd, msg, wParam, lParam);
default:
return DefMDIChildProc(hwnd, msg, wParam, lParam);
}
return 0;
}
BOOL SetUpMDIChildWindowClass(HINSTANCE hInstance)
{
WNDCLASSEX wc;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = MDIChildWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_3DFACE+1);
wc.lpszMenuName = NULL;
wc.lpszClassName = g_szChildClassName;
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if(!RegisterClassEx(&wc))
{
MessageBox(0, "Could Not Register Child Window", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
return FALSE;
}
else
return TRUE;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wc;
HWND hwnd;
MSG Msg;
InitCommonControls();
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON));
wc.hIconSm = (HICON)LoadImage(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_MYICON), IMAGE_ICON, 16, 16, 0);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = MAKEINTRESOURCE(IDR_MAINMENU);
wc.lpszClassName = g_szClassName;
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if(!RegisterClassEx(&wc))
{
MessageBox(NULL, "Window Registration Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
if(!SetUpMDIChildWindowClass(hInstance))
return 0;
hwnd = CreateWindowEx(
0,
g_szClassName,
"The Symmetric Encryption Tutorial with CTAK & KAK",
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
CW_USEDEFAULT, CW_USEDEFAULT, 480, 320,
NULL, NULL, hInstance, NULL);
if(hwnd == NULL)
{
MessageBox(NULL, "Window Creation Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
g_hMainWindow = hwnd;
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
if (!TranslateMDISysAccel(g_hMDIClient, &Msg))
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
}
return Msg.wParam;
}Any idea's?? any help will be gratefully received.
