Thread: help handling checkbox

in my switch message i have

Code:

case WM_COMMAND:
		switch(LOWORD(wParam))
		{
		case IDC_CHECK: MessageBox(NULL,"Ticked","",0); break;
		}
	break;

//styles for button
 WS_CHILD  | BS_CHECKBOX | BS_AUTO3STATE | WS_CLIPCHILDREN,

but when i go to untick the checkbox , it does the messagebox again , so something cant be right

the create window is in the winmain code , ive added a second button but that just effects using button one now , heres my switch

Code:

#include "stdafx.h"
#include "ProxyLoaderGui.h"
#include <windows.h>



LRESULT WINAPI WndProc(HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam);
void RegisterWindowClass(HINSTANCE hInstance);
void CreateAppWindow(HINSTANCE hInstance);
void CreateButtonWindow(HINSTANCE hInstance,HWND hWnd);
void CreateStartWindow(HINSTANCE hInstance,HWND hWnd);
WPARAM StartMessageLoop();

HWND g_hWnd;
HWND g_hButton;
HWND g_hStart;
int Result;

#define IDC_CHECK 1001
#define IDC_START 1002

INT WINAPI WinMain(HINSTANCE hInstance,HINSTANCE,LPSTR,INT)
{
	RegisterWindowClass(hInstance);
	CreateAppWindow(hInstance);
	CreateButtonWindow(hInstance,g_hWnd);
	CreateStartWindow(hInstance,g_hWnd);

	ShowWindow(g_hWnd,SW_SHOWDEFAULT);
	ShowWindow(g_hButton,SW_SHOWDEFAULT);
	ShowWindow(g_hStart,SW_SHOWDEFAULT);

	UpdateWindow(g_hWnd);
	UpdateWindow(g_hButton);
	UpdateWindow(g_hStart);
	INT result = StartMessageLoop();
	return result;
}

LRESULT WINAPI WndProc(HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
	switch(msg)
	{
	case WM_CREATE:
		return 0;

	case WM_COMMAND:
		switch(LOWORD(wParam))
		{
		case IDC_CHECK: 
			Result = SendMessage(g_hButton,BM_GETCHECK,0,0); 
			if(Result == BST_CHECKED)
			{
				MessageBox(NULL,"BST_CHECKED","",0); 
				break;
			}
			if(Result == BST_INDETERMINATE)
			{
				MessageBox(NULL,"BST_INDETERMINATE","",0); 
				break;
			}
			if(Result == BST_UNCHECKED)
			{
				MessageBox(NULL,"BST_UNCHECKED","",0); 
				break;
			}
		break;

	   // case IDC_START: MessageBox(NULL,"Pressed","",0); break;

			
		}
	break;

	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;

	case WM_PAINT:
		ValidateRect(g_hWnd,NULL);
		ValidateRect(g_hButton,NULL);
		ValidateRect(g_hStart,NULL);

		RedrawWindow(g_hWnd,NULL,NULL,RDW_INVALIDATE);
		RedrawWindow(g_hButton,NULL,NULL,RDW_INVALIDATE);
		RedrawWindow(g_hStart,NULL,NULL,RDW_INVALIDATE);
		return 0;
	}
	return DefWindowProc(hWnd,msg,wParam,lParam);
}

void RegisterWindowClass(HINSTANCE hInstance)
{
	WNDCLASSEX wc;
	wc.cbSize = sizeof(WNDCLASSEX);
	wc.style = CS_HREDRAW | CS_HREDRAW | CS_OWNDC;
	wc.lpfnWndProc = WndProc;
	wc.cbWndExtra = 0;
	wc.cbClsExtra = 0;
	wc.hInstance = hInstance;
	wc.hIcon = LoadIcon(NULL,IDI_APPLICATION);
	wc.hCursor = (HCURSOR)LoadCursor(NULL,IDC_ARROW);
	wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wc.lpszMenuName = "MainWin";
	wc.lpszClassName = "WinApp";
	wc.hIconSm = NULL;

	RegisterClassEx(&wc);
}

void CreateAppWindow(HINSTANCE hInstance)
{
	g_hWnd = CreateWindowEx(WS_EX_TOOLWINDOW,
		                "WinApp",
	 "Basic Windows Application",
	         WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
			 100,
			 100,
			 648,
			 514,
			 GetDesktopWindow(),
			 NULL,
			 hInstance,
			 NULL);
}

void CreateButtonWindow(HINSTANCE hInstance,HWND hWnd)
{
	g_hButton = CreateWindowEx(NULL,
		                "BUTTON",
	               "Button",
	         WS_CHILD  | BS_CHECKBOX | BS_AUTO3STATE | WS_BORDER,
			 0,
			 0,
			 100,
			 100,
			 hWnd,
			 (HMENU)IDC_CHECK,
			 hInstance,
			 NULL);
}

void CreateStartWindow(HINSTANCE hInstance,HWND hWnd)
{
	g_hStart = CreateWindowEx(NULL,
		                "BUTTON",
	               "Start",
	         WS_CHILD | WS_BORDER,
			 200,
			 0,
			 100,
			 100,
			 hWnd,
			 (HMENU)IDC_START,
			 hInstance,
			 NULL);
}

WPARAM StartMessageLoop()
{
	MSG msg;
	while(1)
	{
		if(PeekMessage(&msg,NULL,0,0,PM_REMOVE))
		{
			if(msg.message == WM_QUIT)
				break;
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		else
		{

		}
	}
	return msg.wParam;
}

now the first is not working and not saying clicked etc after i add IDC_START