open a blank window in C

[silent nacelle]

hi all,

i am trying to open up a window

i have coded out word for word from this youtube video
https://www.youtube.com/watch?v=8GCvZs55mEM&list=PLWzp0Bbyy_3i750dsUj7yq4JrPOIUR_NK&index=1

but i am getting errors, can anyone help

#include <windows.h>



LRESULT CALLBACK WindowProcedure(HWND,UINT,WPARAM,LPARAM);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{

    //MessageBox(NULL, "HELLO","My first GUI",MB_OK);

    WNDCLASSEXW wc = {0};

    wc.hbrBackground = (HBRUSH) COLOR_WINDOW ;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hInstance = hInst;
    wc.lpszClassName = L"myWindowClass";
    wc.lpfnWndProc = WindowProcedure;



    if(!RegisterClassW(&wc));
        return -1;

        CreateWindowW(L"myWindowClass",L"My Window",WS_EX_OVERLAPPEDWINDOW | WS_VISIBLE,100,100,500,500,
                      NULL,NULL,NULL,NULL);


    MSG msg = {0};

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

    return 0;

}

LRESULT CALLBACK WindowProcedure(HWND HWND,UINT msg,WPARAM wp,LPARAM lp)
{
    switch ( msg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProcW(HWND,msg,wp,lp);

    }
}

[keen furnace]

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[silent nacelle]

open a blank window in C

[mortal dove]

What errors?

[silent nacelle]

error: 'hInst' undeclared (first use in this function)|

[patent ginkgo]

Probably you followed the video incorrectly.

Helps to learn C properly first as this is a very trivial error.

[silent nacelle]

ye some codes were wrong, looked into it

[mortal dove]

That would be this line: wc.hInstance = hInst;. likely because you named the argument hinstance instead of hInst

[silent nacelle]

i have corrected it

its running but nothing happens

new code

#include <windows.h>



LRESULT CALLBACK WindowProcedure(HWND,UINT,WPARAM,LPARAM);

int WINAPI WinMain(HINSTANCE hInst , HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{

    //MessageBox(NULL, "HELLO","My first GUI",MB_OK);

    WNDCLASSEXW wc = {0};

    wc.hbrBackground = (HBRUSH) COLOR_WINDOW ;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hInstance = hInst;
    wc.lpszClassName = L"myWindowClass";
    wc.lpfnWndProc = WindowProcedure;



    if(!RegisterClassW(&wc));
        return -1;

        CreateWindowW(L"myWindowClass",L"My Window",WS_EX_OVERLAPPEDWINDOW | WS_VISIBLE,100,100,500,500,
                      NULL,NULL,NULL,NULL);


    MSG msg = {0};

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

    return 0;

}

LRESULT CALLBACK WindowProcedure(HWND HWND,UINT msg,WPARAM wp,LPARAM lp)
{
    switch ( msg)
    {
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProcW(HWND,msg,wp,lp);

    }
}

[mortal dove]

Are you compiling your code with warnings enabled? You may have other issues