Jump to content
  • Advertisement
Sign in to follow this  
molehill mountaineer

[Win32] [solved] CreateWindowEx returns error 1407

This topic is 2124 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Hello fellow coders,

Can any of you spot what I'm missing here? I'm trying to create a win32 window but falling flat on my face, it's kind of embarrassing really smile.png
After the call to CreateWindowEx() I'm getting error 1407 which stands for "Cannot find window class".
This leads me to believe that I'm filling in the class structure incorrectly, even though registerClass() doesn't seem to fail.

EDIT: parameters were in the wrong order

bool Window::initialize(HINSTANCE p_instance, UINT p_showCommand)
tstring className = _T("solipsistWindow");
//define and register window class
WNDCLASSEX windowClass;
windowClass.cbSize = sizeof(WNDCLASSEX);
windowClass.style = CS_HREDRAW | CS_VREDRAW;
windowClass.lpfnWndProc = WindowProc;
windowClass.cbClsExtra = NULL;
windowClass.cbWndExtra = NULL;
windowClass.hInstance = p_instance;
windowClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
windowClass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
windowClass.hCursor = LoadCursor(NULL, IDC_CROSS);
windowClass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); //+1 to differentiate between background and scrollbar
windowClass.lpszClassName = className.c_str();
windowClass.lpszMenuName = NULL;
MessageBox(NULL, _T("failed to register window class"), _T("Fatal error"), MB_OK);
return false;

m_windowHandle = CreateWindowEx(WS_EX_CLIENTEDGE,
className.c_str(), //window class
NULL, //parent
NULL, //window
NULL); //lParam

if(m_windowHandle == NULL)
DWORD errorCode = GetLastError();
tstringstream errorMessage;
errorMessage << _T("Failed to create window after registering window class. Error code ");
errorMessage << errorCode;

MessageBox(NULL, errorMessage.str().c_str() , _T("Fatal Error"), MB_OK);
return false;
ShowWindow(m_windowHandle, p_showCommand);
return true;

Share this post

Link to post
Share on other sites

What's a tstring?
What type is className?
Also, are you compiling in Multi-Byte or Unicode?

tstring is defined as either wstring or regular string object depending on whether or not unicode is being used.
classname is a wstring (as are all tstrings because I'm using Unicode character set)

defines for tstring in file defines.h which is included by the window wrapper

#ifndef DEFINES_H
#define DEFINES_H
#include <Windows.h>
#include <tchar.h> //used for _T() macro
#include <string>
#include <sstream>

//widestring support
#if defined(UNICODE) || defined(_UNICODE)

#define tstring std::wstring
#define tstringstream std::wstringstream


#define tstring std::string
#define tstringstream std::stringstream



Edited by molehill mountaineer

Share this post

Link to post
Share on other sites
Sign in to follow this  

  • Advertisement

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!