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[win32api] can't close dialog

mekkatorqu (416)
I encountered this weird problem SEVERAL times, I have no idea how to fix it, but I did it all the time, however I kinda can't fix it now, any suggestions?

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#include <Windows.h>
#include "resource.h"

#pragma comment(linker,"\"/manifestdependency:type='win32' \
name='Microsoft.Windows.Common-Controls' version='6.0.0.0' \
processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

BOOL CALLBACK MainDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);

#define MY_WM_INITDIALOG (WM_USER + 1)

INT WINAPI wWinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPWSTR lpCmdLine, INT nShowCmd)
{
	UNREFERENCED_PARAMETER(hPrevInst);
	UNREFERENCED_PARAMETER(lpCmdLine);

	WNDCLASSEX wClass;
	ZeroMemory(&wClass,sizeof(WNDCLASSEX));
	wClass.cbClsExtra=0;
	wClass.cbSize=sizeof(WNDCLASSEX);
	wClass.cbWndExtra=DLGWINDOWEXTRA;
	wClass.hbrBackground=(HBRUSH)(COLOR_BTNFACE + 1);
	wClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	wClass.hIcon=NULL;
	wClass.hIconSm=NULL;
	wClass.hInstance=hInst;
	wClass.lpfnWndProc=(WNDPROC)MainDlgProc;
	wClass.lpszClassName="Window Class";
	wClass.lpszMenuName=NULL;
	wClass.style=CS_HREDRAW | CS_VREDRAW;

	if(!RegisterClassEx(&wClass))
	{
		int nResult = GetLastError();
		MessageBox(NULL, "Window Class Creation Failed!", NULL, MB_ICONERROR | MB_OK);
		return 0;
	}

	HWND hWnd = CreateDialog(hInst, MAKEINTRESOURCE(IDD_MAIN1), NULL, NULL);

	if(!hWnd)
	{
		int nResult = GetLastError();
		MessageBox(NULL, "Dialog Creation Failed!", NULL, MB_ICONERROR | MB_OK);
		return 0;
	}

	MSG msg;
	ZeroMemory(&msg,sizeof(MSG));

	while(GetMessage(&msg, NULL, 0, 0) == TRUE)
	{
		if(!IsDialogMessage(hWnd, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}
	return msg.wParam;
}

BOOL CALLBACK MainDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch(msg)
	{
	case WM_CREATE:
		{
		}
		break;
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return 0;
		}
		break;
	case WM_COMMAND:
		{
			switch(LOWORD(wParam))
			{
			
			}
			break;
		}
	default:
		break;
	}
	return DefWindowProc(hWnd, msg, wParam, lParam);
}


I'm using this template (made by me) for every win32 application I'm making

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#include <Windows.h>
#include "resource.h"

#pragma comment(linker,"\"/manifestdependency:type='win32' \
name='Microsoft.Windows.Common-Controls' version='6.0.0.0' \
processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

BOOL CALLBACK MainDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);

#define MY_WM_INITDIALOG (WM_USER + 1)

INT WINAPI wWinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPWSTR lpCmdLine, INT nShowCmd)
{
	UNREFERENCED_PARAMETER(hPrevInst);
	UNREFERENCED_PARAMETER(lpCmdLine);

	WNDCLASSEX wClass;
	ZeroMemory(&wClass,sizeof(WNDCLASSEX));
	wClass.cbClsExtra=0;
	wClass.cbSize=sizeof(WNDCLASSEX);
	wClass.cbWndExtra=DLGWINDOWEXTRA;
	wClass.hbrBackground=(HBRUSH)(COLOR_BTNFACE + 1);
	wClass.hCursor=LoadCursor(NULL,IDC_ARROW);
	wClass.hIcon=NULL;
	wClass.hIconSm=NULL;
	wClass.hInstance=hInst;
	wClass.lpfnWndProc=(WNDPROC)MainDlgProc;
	wClass.lpszClassName="Window Class";
	wClass.lpszMenuName=NULL;
	wClass.style=CS_HREDRAW | CS_VREDRAW;

	if(!RegisterClassEx(&wClass))
	{
		int nResult = GetLastError();
		MessageBox(NULL, "Window Class Creation Failed!", NULL, MB_ICONERROR | MB_OK);
		return 0;
	}

	HWND hWnd = CreateDialog(hInst, MAKEINTRESOURCE(IDD_DIALOG1), NULL, NULL);

	if(!hWnd)
	{
		int nResult = GetLastError();
		MessageBox(NULL, "Dialog Creation Failed!", NULL, MB_ICONERROR | MB_OK);
		return 0;
	}

	MSG msg;
	ZeroMemory(&msg,sizeof(MSG));

	while(GetMessage(&msg, NULL, 0, 0) == TRUE)
	{
		if(!IsDialogMessage(hWnd, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}
	return msg.wParam;
}

BOOL CALLBACK MainDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch(msg)
	{
	case MY_WM_INITDIALOG:
		{
			
		}
		break;
	case WM_CREATE:
		{
			PostMessage(hWnd, MY_WM_INITDIALOG, 0, 0);
		}
		break;
	case WM_DESTROY:
		{
			PostQuitMessage(0);
			return 0;
		}
		break;
	case WM_COMMAND:
		{
			switch(LOWORD(wParam))
			{
			
			}
			break;
		}
	}
	return DefWindowProc(hWnd, msg, wParam, lParam);
}


what's wrong?
Last edited on
mekkatorqu (416)
fixed, I forgot to set window class in the resource, I hope I won't do this error again
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