Dim Menus

**ElWhapo** · 12-28-2004

How do you dim a menu inside the program, not in the resource script.

**andyhunter** · 12-28-2004

Well if you really want to do it the hard way you are going to want to look at the CreateMenu() function, and the AppendMenu() function in the windows sdk. Here is a short code excerpt:

Code:

//......

HMENU hMenu;

hMenu = CreateMenu() //return handle to new menu

AppendMenu(hMenu, MF_STRING, IDM_FILE, "&File");

AppendMenu(hMenu, MF_STRING, IDM_EDIT, "&Edit");

SetMenu(hwnd, hMenu);

//....

**andyhunter** · 12-28-2004

Ok so I got bored. Here is a complete working program that attaches a menu created by using the above code.

**ElWhapo** · 12-28-2004

Ok, so I created my menu without a resource, that was easy enough. Now how do I go about dimming an item? And how do you make a dropdown from file?

**prog-bman** · 12-28-2004

What do you mean by dimming an item? If you mean thats is grayed just use this

Code:

AppendMenu(hMenu, MF_STRING | MF_GRAYED, IDM_EDIT, "&Edit");

**andyhunter** · 12-28-2004

Let's see if you mean enabling and disabling menu items then you would use EnableMenuItem(). Here is a code excerpt:

Code:

EnableMenuItem(hMenu, IDM_FILE, MF_ENABLED); //enable item

EnableMenuItem(hMenu, IDM_EDIT, MF_GRAYED); //disable item

Hope that helps. Happy Coding!

[edit]

Here is another sample program. This one dynamically creates the menu, and then enables/disables menu items based on user selection.

This program has 2 dropdown menus File and Help

[/edit]

**ElWhapo** · 12-28-2004

thanks

**ElWhapo** · 12-28-2004

One more question, how do you make a seperator?

**andyhunter** · 12-28-2004

Code:

AppendMenu(hMenu, MF_SEPARATOR, 0, NULL);

Happy Coding!

[edit]

So for example in the sample program I provided if we did this:

Code:

AppendMenu(hMenuPopup, MF_STRING, IDM_FILE_START, TEXT("Start"));
AppendMenu(hMenuPopup, MF_SEPARATOR, 0, NULL);
AppendMenu(hMenuPopup, MF_STRING, IDM_FILE_STOP, TEXT("Stop"));

It would put a separator between Start and Stop

[/edit]

**ElWhapo** · 12-28-2004

Thanks again.

**ElWhapo** · 12-29-2004

I'm making battleship, and these menus just wont cooperate. Here is my code. I've commented when I need to switch the menus from disabled back to enabled. For some reason it will disable, but not enable itself when I click IDDN_OK from a dialog (resource).

Code:

#include <iostream>
#include <windows.h>
#include "resource.h"
using namespace std;

int boats[5];
char boat1pos[2];
char boat2pos[2];
char boat3pos[2];
char boat4pos[2];
char boat5pos[2];
char computerBoard[12][12];
char playerBoard[12][12];

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK DlgProc (HWND, UINT, WPARAM, LPARAM);
HINSTANCE hInstance;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
	HWND hWnd;
	MSG msg;
	WNDCLASSEX wndclass;
	HMENU hMenu, hMenuPopup;
	wndclass.cbSize = sizeof (wndclass);
	wndclass.style = CS_HREDRAW | CS_VREDRAW;
	wndclass.lpfnWndProc = WndProc;
	wndclass.cbClsExtra = 0;
	wndclass.cbWndExtra = 0;
	wndclass.hInstance = hInstance;
	wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
	wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH);
	wndclass.lpszClassName = "Battleship";
	wndclass.hIcon = (HICON)LoadImage(hInstance,MAKEINTRESOURCE(IDI_ICON1),IMAGE_ICON,0,0,LR_DEFAULTSIZE);
	wndclass.hIconSm = (HICON)LoadImage(hInstance,MAKEINTRESOURCE(IDI_ICON1),IMAGE_ICON,0,0,LR_DEFAULTSIZE);
	wndclass.lpszMenuName  = NULL;
	RegisterClassEx (&wndclass);
	hWnd = CreateWindow("Battleship","Battleship",WS_OVERLAPPEDWINDOW,100,100,500,500,NULL,NULL,hInstance,NULL);
	hMenu = CreateMenu();
	hMenuPopup = CreateMenu();
	AppendMenu(hMenuPopup, MF_STRING, IDM_NEW, TEXT("&New Game"));
	AppendMenu(hMenuPopup, MF_STRING, IDM_LOAD, TEXT("&Load Game"));
	AppendMenu(hMenuPopup, MF_STRING, IDM_CLOSE, TEXT("&Close"));
	AppendMenu(hMenuPopup, MF_SEPARATOR, 0, NULL);
	AppendMenu(hMenuPopup, MF_STRING, IDM_SAVE, TEXT("&Save"));
	AppendMenu(hMenuPopup, MF_STRING, IDM_SAVEAS, TEXT("&Save As..."));
	AppendMenu(hMenuPopup, MF_SEPARATOR, 0, NULL);
	AppendMenu(hMenuPopup, MF_STRING, IDM_LOAD, TEXT("&Statistics"));
	AppendMenu(hMenuPopup, MF_SEPARATOR, 0, NULL);
	AppendMenu(hMenuPopup, MF_STRING, IDM_QUIT, TEXT("&Quit"));
	AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuPopup, TEXT("&File"));
	hMenuPopup = CreateMenu();
	AppendMenu(hMenuPopup, MF_STRING, IDM_RULES, TEXT("&Rules"));
	AppendMenu(hMenuPopup, MF_SEPARATOR, 0, NULL);
	AppendMenu(hMenuPopup, MF_STRING, IDM_ABOUT, TEXT("&About"));
	AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuPopup, TEXT("&Help"));
	SetMenu(hWnd, hMenu);
	EnableMenuItem(hMenu, IDM_CLOSE, MF_GRAYED);
	EnableMenuItem(hMenu, IDM_SAVE, MF_GRAYED);
	EnableMenuItem(hMenu, IDM_SAVEAS, MF_GRAYED);
	ShowWindow(hWnd, SW_SHOWDEFAULT);
	UpdateWindow(hWnd);
	SetFocus(hWnd);
	while (GetMessage (&msg, NULL, 0, 0))
	{														
		TranslateMessage (&msg);
		DispatchMessage (&msg);
	}
	UnregisterClass("Battleship",hInstance);
	return msg.wParam;
}

LRESULT CALLBACK WndProc (HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
	switch(iMsg)
	{
	case WM_CREATE:
		{
			int x, y;
			for(x=0; x<12; x++)
			{
				for(y=0; y<12; y++)
				{
					computerBoard[x][y] = ' ';
					playerBoard[x][y] = ' ';
				}
			}
			break;
		}
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			break;
		}
	case WM_COMMAND:
		{
			if(LOWORD(wParam) == IDM_QUIT)
			{
				PostQuitMessage(0);
				break;
			}
			if(LOWORD(wParam) == IDM_RULES)
			{
				DialogBox(hInstance, MAKEINTRESOURCE(IDD_HELP), NULL, (DLGPROC)DlgProc);
				break;
			}
			if(LOWORD(wParam) == IDM_ABOUT)
			{
				DialogBox(hInstance, MAKEINTRESOURCE(IDD_ABOUT), NULL, (DLGPROC)DlgProc);
				break;
			}
			if(LOWORD(wParam) == IDM_NEW)
			{
				DialogBox(hInstance, MAKEINTRESOURCE(IDD_NEW), NULL, (DLGPROC)DlgProc);
				break;
			}
			break;
		}
	}
	return DefWindowProc (hWnd, iMsg, wParam, lParam);
}

LRESULT CALLBACK DlgProc (HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
	HMENU hMenu;
	hMenu = GetMenu(hWnd);
	switch(iMsg)
	{
	case WM_COMMAND:
		{
			switch(LOWORD(wParam))
			{
			case IDDH_OK:
				{
					EndDialog(hWnd, FALSE);
					break;
				}
			case IDDA_OK:
				{
					EndDialog(hWnd, FALSE);
					break;
				}
			case IDDN_CANCEL:
				{
					EndDialog(hWnd, FALSE);
					break;
				}
			case IDDN_OK:
				{
					GetDlgItemText(hWnd, IDDN_BT1EDIT, boat1pos, 2);
					GetDlgItemText(hWnd, IDDN_BT2EDIT, boat2pos, 2);
					GetDlgItemText(hWnd, IDDN_BT3EDIT, boat3pos, 2);
					GetDlgItemText(hWnd, IDDN_BT4EDIT, boat4pos, 2);
					GetDlgItemText(hWnd, IDDN_BT5EDIT, boat5pos, 2);

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------->  NEED HELP HERE -------------------------- NEED HELP HERE <---
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------					EnableMenuItem(hMenu, IDM_CLOSE, MF_ENABLED);
					EnableMenuItem(hMenu, IDM_SAVE, MF_ENABLED);
					EnableMenuItem(hMenu, IDM_SAVEAS, MF_ENABLED);
		

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------> NEED HELP HERE ---------------------------- NEED HELP HERE <---
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
			
EndDialog(hWnd,  FALSE);
					break;
				}
			case IDDN_BT1L:
				{
					boats[0] = 1;
					break;
				}
			case IDDN_BT1R:
				{
					boats[0] = 2;
					break;
				}
			case IDDN_BT1U:
				{
					boats[0] = 3;
					break;
				}
			case IDDN_BT1D:
				{
					boats[0] = 4;
					break;
				}
			case IDDN_BT2L:
				{
					boats[1] = 1;
					break;
				}
			case IDDN_BT2R:
				{
					boats[1] = 2;
					break;
				}
			case IDDN_BT2U:
				{
					boats[1] = 3;
					break;
				}
			case IDDN_BT2D:
				{
					boats[1] = 4;
					break;
				}
			case IDDN_BT3L:
				{
					boats[3] = 1;
					break;
				}
			case IDDN_BT3R:
				{
					boats[3] = 2;
					break;
				}
			case IDDN_BT3U:
				{
					boats[3] = 3;
					break;
				}
			case IDDN_BT3D:
				{
					boats[3] = 4;
					break;
				}
			}
			break;
		}
	case WM_CLOSE:
	case WM_DESTROY:
	case WM_QUIT:
		{
			EndDialog(hWnd, FALSE);
			break;
		}
		break;
	}
	return DefWindowProc (hWnd, iMsg, wParam, lParam);
}

**andyhunter** · 12-30-2004

I am afriad right off the bat I do not see anything, maybe somebody else might? Have you tried moving your initialization of hmenu into the specific case, aka :

Code:

case IDDN_OK: 
                      hMenu = GetMenu(hWnd)
                      //.....

Otherwise if you attach your entire project I will try to help you troubleshoot it to see what is happening.

**anonytmouse** · 12-30-2004

Code:

LRESULT CALLBACK DlgProc (HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
	HMENU hMenu;
	hMenu = GetMenu(hWnd);

You're getting the menu for the dialog box rather than the main application window.

Typically, you would use the main application window as the parent window when you create dialog boxes:

Code:

	DialogBox(hInstance, MAKEINTRESOURCE(IDD_HELP), hWnd, DlgProc);

and then you can retrieve a handle to the main application window from a dialog procedure using GetParent:

Code:

	hMenu = GetMenu(GetParent(hWnd));

Of course, you could also use a global variable or a variety of other methods.

--
Donate to quake disaster relief effort

**andyhunter** · 12-30-2004

See I knew someone else would see it. Good catch anonytmouse.

**ElWhapo** · 12-30-2004

Thank you.

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