windows programing setting up window [closed] - winapi

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i have these tow errors and can't fix them what ever i try. i am running windows 8.1
Error 1 error C3861: 'InitMainWindow': identifier not found
Error 2 error C2440: '=' : cannot convert from 'LRESULT (__stdcall *)(HWND,WPARAM,LPARAM)' to 'WNDPROC'
code:
#include <windows.h> // include the basic windows header file
bool InitMainWindow(HINSTANCE, int);
LRESULT CALLBACK MsgProc(HWND UINT, WPARAM, LPARAM);
const int width = 800;
const int height = 600;
HWND hwnd = NULL;
// the entry point for any Windows program
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
if (!InitMainWindow(hInstance, nCmdShow))
return 1;
MSG msg = { 0 };
while (WM_QUIT != msg.message)
{
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return static_cast<int>(msg.wParam);
}
}
bool InitMainWindow(HINSTANCE hInstance, int nCmdShow)
{
WNDCLASSEX wcex;
wcex.cbSize = sizeof(wcex);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.lpfnWndProc = MsgProc;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
wcex.lpszClassName = NULL;
wcex.lpszMenuName = NULL;
wcex.hIconSm = LoadIcon(NULL, IDI_WINLOGO);
if (!RegisterClassEx(&wcex))
return false;
hwnd = CreateWindow (
NULL,
NULL,
WS_OVERLAPPED | WS_SYSMENU | WS_CAPTION,
GetSystemMetrics(SM_CXSCREEN) / 2 - width / 2,
GetSystemMetrics(SM_CYSCREEN) / 2 - height / 2,
width,
height,
(HWND)NULL,
(HMENU)NULL,
hInstance,
(LPVOID*)NULL);
if (!hwnd)
return false;
ShowWindow(hwnd, nCmdShow);
return true;
}
LRESULT CALLBACK MsgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_DESTROY:
PostQuitMessage(0);
return 0;
case WM_CHAR:
switch (wParam)
{
case VK_ESCAPE:
PostQuitMessage(0);
return 0;
}
return 0;
}
return DefWindowProc(hwnd, msg, wParam, lParam);
}

Answer 1

You're missing a comma in your declaration of MsgProc.
You have
LRESULT CALLBACK MsgProc(HWND UINT, WPARAM, LPARAM);
which declares a function that takes an HWND named UINT.
You need
LRESULT CALLBACK MsgProc(HWND, UINT, WPARAM, LPARAM);
After this, it compiles fine.