Window Cannot Be Selected

Make sure you handle the messages to the window properly. It sounds like you are somehow just ignoring the WM_ACTIVATE message.

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The Phoenix shall arise from the ashes... ThunderHawk -- ¦þ
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Well i let it go right back to the DefWindowProc(), is that a bad thing?

-Dan

Yes I realize im a n00b...

Hmmm, never mind then...I''m not overly versed in the Win32 API (just enough to do what I want to). You might find some help at Winprog.org.

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The Phoenix shall arise from the ashes... ThunderHawk -- ¦þ
MySite
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Well thanx though, anyone else>?


-Dan

Yes I realize im a n00b...

It sort of sounds like you're using a modal dialog. Are you? If this is the case, the window you created, not being a child window, would be unable to be selected.

At the same time, what WindowProc did you use for the window you want to be selected when you created it? That really shouldn't be too much of a concern if you used the same one though, because the HWND would be pointing to the other window.

(Some code on your windows creation would be nice to see though.)

[edited by - Nytegard on January 10, 2004 6:20:32 PM]

I dunno what you mean by modal dialog, i created both windows with CreateWindow(), but a child window is limited to the parent''s client area, and also, it cant have a caption or anything, i just want a normal second window created when the first recieves a certain command.

-Dan

Yes I realize im a n00b...

You need to show a little code, because this code (which I think you mean), works fine:

#include <windows.h>

#define NAME1		"A window"
#define TITLE1		"A window"

#define NAME2		"A second window"
#define TITLE2		"A second window"

HWND hWnd;
HWND secondhWnd;

LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
						 WPARAM wParam, LPARAM lParam);

LRESULT CALLBACK SecondWndProc(HWND hWnd, UINT message,
						 WPARAM wParam, LPARAM lParam);

ATOM MyRegisterClass(HINSTANCE hInstance, LPCSTR name);
ATOM MyRegisterClassSecond(HINSTANCE hInstance, LPCSTR name);


BOOL InitApp(HINSTANCE hInstance, int nCmdShow, LPCSTR name, LPCSTR title)
{

	// Create a window


	hWnd = CreateWindow(name,
		title,
		WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		NULL,
		0,
		hInstance,
		NULL);

	if (!hWnd)
		return FALSE;
	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);
	return TRUE;
}

BOOL InitAppSecond(HINSTANCE hInstance, int nCmdShow, LPCSTR name, LPCSTR title)
{

	// Create a window


	secondhWnd = CreateWindow(name,
		title,
		WS_VISIBLE|WS_SYSMENU|WS_OVERLAPPED,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		CW_USEDEFAULT,
		NULL,
		0,
		hInstance,
		NULL);

	if (!secondhWnd)
		return FALSE;
	ShowWindow(secondhWnd, nCmdShow);
	UpdateWindow(secondhWnd);
	return TRUE;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
						 WPARAM wParam, LPARAM lParam)
{
	HINSTANCE hInstance;

	hInstance = (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE);

	switch (message) 
	{
	case WM_CREATE:
		MyRegisterClassSecond(hInstance, NAME2);

		if( FAILED( InitAppSecond(hInstance, SW_SHOW, NAME2, TITLE2) ) )
			return 0;
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

LRESULT CALLBACK SecondWndProc(HWND hWnd, UINT message,
						 WPARAM wParam, LPARAM lParam)
{
	return DefWindowProc(hWnd, message, wParam, lParam);
}


ATOM MyRegisterClass(HINSTANCE hInstance, LPCSTR name)
{
	WNDCLASS wc;

	// Set up and register window class

	wc.style = CS_HREDRAW | CS_VREDRAW;
	wc.lpfnWndProc = WndProc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hInstance = hInstance;
	wc.hIcon = 0;
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hbrBackground = (HBRUSH )GetStockObject(WHITE_BRUSH);
	wc.lpszMenuName = 0;
	wc.lpszClassName = name;
	return RegisterClass(&wc);
}

ATOM MyRegisterClassSecond(HINSTANCE hInstance, LPCSTR name)
{
	WNDCLASS wc;

	// Set up and register window class

	wc.style = CS_HREDRAW | CS_VREDRAW;
	wc.lpfnWndProc = SecondWndProc;
	wc.cbClsExtra = 0;
	wc.cbWndExtra = 0;
	wc.hInstance = hInstance;
	wc.hIcon = 0;
	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
	wc.hbrBackground = (HBRUSH )GetStockObject(WHITE_BRUSH);
	wc.lpszMenuName = 0;
	wc.lpszClassName = name;
	return RegisterClass(&wc);
}

int APIENTRY WinMain(HINSTANCE hInstance,
					 HINSTANCE hPrevInstance,
					 LPSTR     lpCmdLine,
					 int       nCmdShow)
{
	MSG msg;
	MyRegisterClass(hInstance, NAME1);

	if( FAILED( InitApp(hInstance, nCmdShow, NAME1, TITLE1) ) )
		return 0;

	// Main message loop:

	while (GetMessage(&msg, NULL, 0, 0)) 
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return (int)msg.wParam;
}

Is it possibly a bad thing that i registered the second class from the WinMain and then created the window in teh wnd proc?

-Dan

Yes I realize im a n00b...

It doesn''t matter where you registered it, as long as you registered it before you created the window. Then again, if it failed registration, it wouldn''t even show.

It still would be helpful to show some code, as there only is so much people can think of with limited info.

As stated, probably you''re mishandling a WM_ACTIVATE, or I still think you''re using a modal dialog somewhere.

alright i just figured source wouldnt be necessary from this one, but alright

WndProc1

LRESULT CALLBACK WndProc(HWND hWnd, UINT uMessage, WPARAM wParam, LPARAM lParam)
{
	static SockParams SP = {0};

	switch(uMessage)
	{
	case WM_CREATE:
	CreateWindow("EDIT", NULL, WS_CHILD|WS_VISIBLE|WS_BORDER|ES_MULTILINE, 0, 0, 512, 256, hWnd, (HMENU)ID_DISPLAYEDIT, NULL, NULL);
	CreateWindow("EDIT", NULL, WS_CHILD|WS_VISIBLE|WS_BORDER|ES_MULTILINE, 0, 256, 512-128, 256, hWnd, (HMENU)ID_SENDEDIT, NULL, NULL);
	CreateWindow("BUTTON", "Send", WS_CHILD|WS_VISIBLE|WS_BORDER, 512-128, 256, 128, 256, hWnd, (HMENU)ID_SENDBUTTON, NULL, NULL);
	break;
	case WM_DESTROY:
	case WM_CLOSE:
		PostQuitMessage(0);
		break;
	case WM_COMMAND:
		switch (LOWORD(wParam))
		{
		case ID_MENUSERVER:
			_beginthread(SERVERSTARTUP, 0, (void*)&SP);
			AddToEdit(GetDlgItem(hWnd, ID_DISPLAYEDIT), "\r\r\nNOTICE: Starting Up As Server", 32);
			break;
		case ID_MENUCLIENT:
			ClientConnect(&SP);
			break;
		case ID_SENDBUTTON:
			if (SP.bConnected)
			{
				send(SP.Sock, hWnd);
			}
			else
			{
				AppendWndText(hWnd);
				AddToEdit(GetDlgItem(hWnd, ID_DISPLAYEDIT), "\r\r\nERROR: Not Connected\r\r\n", 26);
			}
			break;
		case ID_DISPLAYEDIT:
		case ID_SENDEDIT:
			break;
		}
		break;
	case WM_KEYDOWN:
		if (wParam==VK_RETURN)
		{
			send(SP.Sock, hWnd);
		}
		break;
	default:
		return DefWindowProc(hWnd, uMessage, wParam, lParam);
	}
	return 0;
}

WndProc2

LRESULT CALLBACK IPProc(HWND hWnd, UINT uMessage, WPARAM wParam, LPARAM lParam)
{
	switch(uMessage)
	{
	case WM_CREATE:
		CreateWindow("EDIT", NULL, WS_CHILD|WS_VISIBLE|ES_NUMBER, 4+2, 4, 32, 12, hWnd, (HMENU)ID_ED1, NULL, NULL);
		SendMessage(GetDlgItem(hWnd, ID_ED1), EM_SETLIMITTEXT, 2, NULL);
		CreateWindow("EDIT", NULL, WS_CHILD|WS_VISIBLE|ES_NUMBER, 8+32+2, 4, 32, 12, hWnd, (HMENU)ID_ED2, NULL, NULL);
		SendMessage(GetDlgItem(hWnd, ID_ED2), EM_SETLIMITTEXT, 2, NULL);
		CreateWindow("EDIT", NULL, WS_CHILD|WS_VISIBLE|ES_NUMBER, 12+64+2, 4, 32, 12, hWnd, (HMENU)ID_ED3, NULL, NULL);
		SendMessage(GetDlgItem(hWnd, ID_ED3), EM_SETLIMITTEXT, 2, NULL);
		CreateWindow("EDIT", NULL, WS_CHILD|WS_VISIBLE|ES_NUMBER, 16+96+2, 4, 32, 12, hWnd, (HMENU)ID_ED4, NULL, NULL);
		SendMessage(GetDlgItem(hWnd, ID_ED4), EM_SETLIMITTEXT, 2, NULL);
		CreateWindow("BUTTON", "&Accept", WS_CHILD|WS_VISIBLE, 16, 8+12+4, 128-8, 24, hWnd, (HMENU)ID_BOK, NULL, NULL);
		break;
	case WM_COMMAND:
		if (LOWORD(lParam)==ID_BOK)
		{
			//******//

			//GET IP//or not, thats an old comment

			//******//i dont wanna do it from here anymore

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

Sri for the double post but i want to push this back up to the top since i posted my code...

-Dan

Yes I realize im a n00b...

Ill try once more to ressurect this thread, plz help...