Thread: User input edit box

I don't understand the examples of dialogs I've seen using the search feature.

Would one of you Guru's please explain to me how to get floats or doubles from my hEditX and Y boxes to variables so that I can utilize them.

I am beginning to think I'll never get this, or perhaps I need a different book.

Code:

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);

HINSTANCE hInstGlobal;
HWND hEdit;

int APIENTRY WinMain(HINSTANCE hInstance,
			  HINSTANCE hPrevInstance,
			  LPSTR lpCmdLine,
			  int nCmdShow)
{
	hInstGlobal = hInstance;

	WNDCLASS WndClass;
	WndClass.style = 0;
	WndClass.cbClsExtra = 0;
	WndClass.cbWndExtra = 0;
	WndClass.lpfnWndProc = WndProc;
	WndClass.hInstance = hInstance;
	WndClass.hbrBackground = (HBRUSH) (COLOR_WINDOW+1);
	WndClass.hCursor = LoadCursor (NULL, IDC_ARROW);
	WndClass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
	WndClass.lpszMenuName = 0;
	WndClass.lpszClassName = "WinProg";

	RegisterClass(&WndClass);

	HWND hWindow;
	hWindow = CreateWindow("WinProg", "Edit Field",
		WS_OVERLAPPEDWINDOW,
		0,0,640,400,NULL,NULL,
		hInstance, NULL);

	ShowWindow (hWindow, nCmdShow);

	UpdateWindow (hWindow);

	MSG Message;
	while (GetMessage(&Message, NULL, 0, 0))
	{
		DispatchMessage(&Message);
	}

	return (Message.wParam);
}

LRESULT CALLBACK WndProc (HWND hWnd, UINT uiMessage,
						  WPARAM wParam, LPARAM lParam)
{
	switch(uiMessage)
	{
	case WM_CREATE:
		HWND hEditX, hEditY, hButtonExit, hButtonGroupBox, hButtonXCoord, hButtonYCoord;

		hButtonGroupBox = CreateWindow("BUTTON", "Center",
			WS_CHILD | WS_VISIBLE | BS_GROUPBOX,
			5,5,225,90,
			hWnd, (HMENU) 6,
			hInstGlobal, NULL);

		hButtonXCoord = CreateWindow("BUTTON", "X Coord",
			WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | ES_READONLY,		// Dont let user mess with this.
			10,30,80, 20,
			hWnd, (HMENU) 5,
			hInstGlobal, NULL);

		hButtonYCoord = CreateWindow("BUTTON", "Y Coord",
			WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON | ES_READONLY,		// Dont let user mess with this.
			10,60,80, 20,
			hWnd, (HMENU) 4,
			hInstGlobal, NULL);

		hButtonExit = CreateWindow("BUTTON","EXIT",
			WS_CHILD | WS_VISIBLE |BS_PUSHBUTTON,
			480,320,140,20,
			hWnd, (HMENU) 3,
			hInstGlobal, NULL);

		hEditX = CreateWindow("EDIT","",
			WS_CHILD | WS_VISIBLE | WS_BORDER | ES_NUMBER | BS_DEFPUSHBUTTON,		// Only digits does this allow floats?
			100,30,120,20,
			hWnd, (HMENU) 2,
			hInstGlobal, NULL);
		hEditY = CreateWindow("EDIT","",
			WS_CHILD | WS_VISIBLE | WS_BORDER | ES_NUMBER,
			100,60,120,20,
			hWnd, (HMENU) 1,
			hInstGlobal, NULL);


		return 0;

	case WM_COMMAND:
	if(HIWORD(wParam) == BN_CLICKED)		// BN = Button Notification.  BS_PUSHBUTTON returns BN_CLICKED
		{
			if(LOWORD(wParam) == 1)			// Store the Y coord. to variable.
			{

/*				char *string1;
				string1 = new char[255];		// new float???
				SendMessage (hEdit, WM_GETTEXT, 256,(LPARAM) string1);	*/
												
			}
			if(LOWORD(wParam) == 2)			// Store the X coord. to variable.
			{

			}
			if (LOWORD(wParam) == 3)
			{
				SendMessage (GetParent((HWND) lParam),	// hWnd is the handle of a window object to which the message is sent.
					WM_DESTROY ,0 ,0);					// Msg is the value which identifies the message.
			}											// wParam is the first parameter of the message.
		}												// lParam is the second parameter of the message.
		return 0;

	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	default:
	
		return DefWindowProc (hWnd, uiMessage, wParam, lParam);
	}
}

How about:

GetDlgItemText(hWnd, IDC_A, buffer, sizeof(buffer) / sizeof(TCHAR));

I found this at : http://sunlightd.virtualave.net/Windows/GUI/

I think I shall throw away my book and just do the tutorial on this site.