I have recently started C++ programming and when I had finished my first program I compiled and ran the program which worked however when ran it always opens a second window with the title \bin\Debug\C++ 2d Games tutorial. Here is a image of what is happening.
https://i.sstatic.net/0E1F0.png
What have I done wrong for this to happen? I just want my application window to run without the other one in the background. The code that I have written is also provided here.
// winmain.cpp
#define DEFINE_LEAN_AND_MEAN
#include <iostream>
#include <windows.h>
#include "StdAfx.h
// Function prototypes
int WINAPI WinMain (HINSTANCE, HINSTANCE, LPSTR, int);
bool CreateMainWindow(HINSTANCE, int);
LRESULT WINAPI WinProc(HWND, UINT, WPARAM, LPARAM);
// Global variable
HINSTANCE hinst;
// Constants
const char CLASS_NAME[] = "WinMain";
const char APP_TITLE[] = "Hello World"; // title bar text
const int WINDOW_WIDTH = 400;
const int WINDOW_HEIGHT = 400;
//=================
// Starting point for a windows application
// parameters are
// hInstance. Handle to the current instance of the application
// hPrevInstance. Always NULL, obsolete parameter
// lpCmdLine. Pointer to null-terminated string of command line arguements
// nCmdShow. Specifies how the window is to be shown
//=======================
int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
MSG msg;
// Create the window
if(!CreateMainWindow(hInstance, nCmdShow) )
return false;
// Main message loop
int done = 0;
while (!done)
{
//PeekMessage is non blocking test for Windows messages
if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE) )
{
// Look for quit message
if (msg.message == WM_QUIT)
done = 1;
// Decode and pass messages on to WinProc
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return msg.wParam;
}
//==================
// Window event callback function
//===================
LRESULT WINAPI WinProc ( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam )
{
switch( msg )
{
case WM_DESTROY:
// Tell windows to kill the program
PostQuitMessage(0);
return 0;
}
return DefWindowProc (hWnd, msg, wParam, lParam );
}
//==========
// Create the window
// returns: false on error
//=============
bool CreateMainWindow(HINSTANCE hInstance, int nCmdShow)
{
WNDCLASSEX wcx;
HWND hwnd;
// Fill in the window clasa structure with parameters
// that describes the main window
wcx.cbSize = sizeof(wcx); // size of structure
wcx.style = CS_HREDRAW | CS_VREDRAW; // Redraw if size changes
wcx.lpfnWndProc =WinProc; // Points to the window Procedure
wcx.cbClsExtra = 0; // No extra class memory
wcx.cbWndExtra = 0; // No extra window memory
wcx.hInstance = hInstance; // Handle to instance
wcx.hIcon = NULL;
wcx.hCursor =LoadCursor(NULL, IDC_ARROW); // Predefined arrow
// Background brush
wcx.hbrBackground = (HBRUSH)GetStockObject (BLACK_BRUSH);
wcx.lpszMenuName =NULL; // Name of the menu resource
wcx.lpszClassName = CLASS_NAME; // Name of the window class
wcx.hIconSm = NULL; // Small class icon
// Register the window class
// RegisterClassEx return 0 on error
if (RegisterClassEx(&wcx) == 0) // If error
return false;
// Create Window
hwnd = CreateWindow(
CLASS_NAME, // Name of the window class
APP_TITLE, // Title bar text
WS_OVERLAPPEDWINDOW, // Window style
CW_USEDEFAULT, // Default horizontal position of the window
CW_USEDEFAULT, // Default horizontal positin of the window
WINDOW_WIDTH, // Width of window
WINDOW_HEIGHT, // Height of the window
(HWND) NULL, // No parent menu
(HMENU) NULL, // No menu
hInstance, // Handle to application instance
(LPVOID) NULL); // No window parameters
// If there was an error creating the window
if (!hwnd)
return false;
// Show the window
ShowWindow(hwnd, nCmdShow);
// Send a WM_PAINT message to the window procedure
UpdateWindow(hwnd);
return true;
}
Any help fixing this would be greatly appreciated. As I said before I am new to this and I don't know what I have done wrong. If it helps any this was compiled in code blocks.
Try changing your application to GUI Application in the project properties / build targets. It's probably set to Console.