Use radio buttons for switching different views in the main window - c++

Question

I have an application in Win32/C++ that has three buttons located in the left side of the main window. When clicking on one of them, a group of radiobuttons has to be displayed to allow the user to switch views among different submenus.
The code looks like this:
case WM_CREATE:
{
HWND hWndButton=CreateWindowEx(NULL,
"BUTTON",
"Inserting",
WS_TABSTOP|WS_VISIBLE|
WS_CHILD|BS_DEFPUSHBUTTON,
10,
10,
100,
24,
hWnd,
(HMENU)INSERT_BUTTON,
GetModuleHandle(NULL),
NULL);
HWND hWndButton2=CreateWindowEx(NULL,
"BUTTON",
"Listing",
WS_TABSTOP|WS_VISIBLE|
WS_CHILD|BS_DEFPUSHBUTTON,
10,
60,
100,
24,
hWnd,
(HMENU)LIST_BUTTON,
GetModuleHandle(NULL),
NULL);
HWND hWndButton3=CreateWindowEx(NULL,
"BUTTON",
"Consulting",
WS_TABSTOP|WS_VISIBLE|
WS_CHILD|BS_DEFPUSHBUTTON,
10,
110,
100,
24,
hWnd,
(HMENU)SELECT_BUTTON,
GetModuleHandle(NULL),
NULL);
}
break;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case INSERT_BUTTON:
{
HWND hGrpButtons=CreateWindowEx(WS_EX_WINDOWEDGE,
"BUTTON",
"Select a table:",
WS_VISIBLE | WS_CHILD| BS_GROUPBOX, // Styles
150,30,470,70,
hWnd,
NULL,
GetModuleHandle(NULL), NULL);
HWND hwndCB1 = CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "TSector", WS_VISIBLE | WS_CHILD | BS_AUTORADIOBUTTON | WS_GROUP,
160, 60, 80, 20, hWnd,(HMENU)CB1, GetModuleHandle(NULL), NULL);
HWND hwndCB2 = CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "TSeccio", WS_VISIBLE | WS_CHILD | BS_AUTORADIOBUTTON ,
250, 60, 80, 20, hWnd,(HMENU)CB2, GetModuleHandle(NULL), NULL);
HWND hwndCB3 = CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "TActivitat", WS_VISIBLE | WS_CHILD | BS_AUTORADIOBUTTON,
340, 60, 80, 20, hWnd,(HMENU)CB3, GetModuleHandle(NULL), NULL);
HWND hwndCB4 = CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "TClasse", WS_VISIBLE | WS_CHILD | BS_AUTORADIOBUTTON,
430, 60, 80, 20, hWnd,(HMENU)CB4, GetModuleHandle(NULL), NULL);
HWND hwndCB5 = CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "TQuantitat", WS_VISIBLE | WS_CHILD | BS_AUTORADIOBUTTON,
520, 60, 85, 20, hWnd,(HMENU)CB5, GetModuleHandle(NULL), NULL);
switch(HIWORD(wParam))
{
case CB1:
//Do something
break;
}
}
break;
}
break;
Maybe the switch after creating the radiobuttons is not well implemented but anyway, when compiling, any of the menus that I want to display when clicking on each radiobuttons are not recognised: the compile error I'm retrieving says that I need to declare each menu.
It sounds weird to me because it works in other cases.
Any help would be much appreciated.

Answer 1

CB1 is the identifier of your control, if it is undeclared then just declare using the #define, like this:
#define CB1 1000
the identifier cannot be repeated with id of others controls.
a good way to create menus is to create all the submenus hidden, and when someone click in an option, you just show the submenu using the ShowWindow function.
to create a hidden submenu, just remove the WS_VISIBLE in the CreateWindowEx.
see this example:
// Opts
#define Fruits 1
#define Colors 2
// Fruits
#define Apple 5
#define Pineapple 6
// Colors
#define Red 10
#define Blue 11
void HideAll(HWND hwnd)
{
// Fruits
ShowWindow(GetDlgItem(hwnd, Apple), SW_HIDE);
ShowWindow(GetDlgItem(hwnd, Pineapple), SW_HIDE);
// Colors
ShowWindow(GetDlgItem(hwnd, Red), SW_HIDE);
ShowWindow(GetDlgItem(hwnd, Blue), SW_HIDE);
}
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) /* handle the messages */
{
case WM_CREATE:
// Menus - All created visible
CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "Fruits", WS_VISIBLE | WS_CHILD,
10, 10, 80, 20, hwnd,(HMENU)Fruits, GetModuleHandle(NULL), NULL);
CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "Colors", WS_VISIBLE | WS_CHILD,
10, 40, 80, 20, hwnd,(HMENU)Colors, GetModuleHandle(NULL), NULL);
// Fruits - All created Invisible
CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "Apple", WS_CHILD,
100, 10, 80, 20, hwnd,(HMENU)Apple, GetModuleHandle(NULL), NULL);
CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "Pineapple", WS_CHILD,
100, 40, 80, 20, hwnd,(HMENU)Pineapple, GetModuleHandle(NULL), NULL);
// Colors - All created Invisible
CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "Red", WS_CHILD,
100, 10, 80, 20, hwnd,(HMENU)Red, GetModuleHandle(NULL), NULL);
CreateWindowEx(WS_EX_WINDOWEDGE, "BUTTON", "Blue", WS_CHILD,
100, 40, 80, 20, hwnd,(HMENU)Blue, GetModuleHandle(NULL), NULL);
break;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case Fruits:
// Hide old
HideAll(hwnd);
// Show new
ShowWindow(GetDlgItem(hwnd, Apple), SW_SHOW);
ShowWindow(GetDlgItem(hwnd, Pineapple), SW_SHOW);
break;
case Colors:
// Hide old
HideAll(hwnd);
// Show new
ShowWindow(GetDlgItem(hwnd, Red), SW_SHOW);
ShowWindow(GetDlgItem(hwnd, Blue), SW_SHOW);
break;
}
break;
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
This is the result of the program:
and when someone click in fruits, it show the fruits suboptions:
and when someone click in colors, the ShowWindow hide the old suboptions and show new suboptions: