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By experimenting, we have found that adding a short delay(~100ms) at the very start(after SDL_CreateWindow) fixes issue. This might mean that there is a conflict between OS's Dekstop/Window Manager and SDL when last renders too quickly. So, adding a short delay tells SDL to wait some time while OS's Dekstop/Window Manager handles window's creation. Also, this might be something related to OS's (D/E)M or its compositor(i.e. compiz) in our case KDE Plasma.

In other words, the changes:

...
        //Create window
        window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
        SDL_Delay(100); // A short delay should be put here(if doesn't work try increasing delay)
        if( window == NULL )
        {
...

After that, a white window opens successfully.

Already wrote to author of LazyFoo and hopefully he'll commit tutorial.

By experimenting, we found that adding a short delay(~100ms) at the very start(after SDL_CreateWindow) fixes the issue. This might mean that there was a conflict between the OS's Dekstop/Window Manager and SDL when the latter renders too quickly. A short delay forces SDL to wait some time while OS's Dekstop/Window Manager handles the window's creation. This might also be something related to the compositor, which in our case - compiz.

In other words, the changes:

...
// Create window
window = SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
SDL_Delay(100); // A short delay should be put here(if doesn't work try increasing delay)
 
if(window == NULL)
{
...

With these changes, the white window opens successfully.

'Already wrote to the author of LazyFoo and hopefully they will alter the tutorial.

By experimenting, we have found that adding a short delay(~100ms) at the very start(after SDL_CreateWindow) fixes issue. This might mean that there is a conflict between OS's Dekstop/Window Manager and SDL when last renders too quickly. So, adding a short delay tells SDL to wait some time while OS's Dekstop/Window Manager handles window's creation. Also, this might be something related to OS's (D/E)M or its compositor(i.e. compiz) in our case KDE Plasma.

In other words, the changes:

...
        //Create window
        window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
        SDL_Delay(100); // A short delay should be put here(if doesn't work try increasing delay)
        if( window == NULL )
        {
...

After that, a white window opens successfully.

Already wrote to author of LazyFoo and hopefully he'll commit tutorial.

Best regards, V7

By experimenting, we have found that adding a short delay(~100ms) at the very start(after SDL_CreateWindow) fixes issue. This might mean that there is a conflict between OS's Dekstop/Window Manager and SDL when last renders too quickly. So, adding a short delay tells SDL to wait some time while OS's Dekstop/Window Manager handles window's creation. Also, this might be something related to OS's (D/E)M or its compositor(i.e. compiz) in our case KDE Plasma.

In other words, the changes:

...
        //Create window
        window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
        SDL_Delay(100); // A short delay should be put here(if doesn't work try increasing delay)
        if( window == NULL )
        {
...

After that, a white window opens successfully.

Already wrote to author of LazyFoo and hopefully he'll commit tutorial.

By experimenting, we have found that adding a short delay(~100ms) at the most start(after SDL_CreateWindow) fixes issue. This might means that there is a conflict between OS's Dekstop/Window Manager and SDL when last renders too quickly. So, adding a short delay tells SDL to wait some time while OS's Dekstop/Window Manager handles window's creation. Also, this might be something related to OS's (D/E)M or its compositor(i.e. compiz) in our case KDE Plasma.

In other words, the changes:

...
        //Create window
        window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
        SDL_Delay(100); // A short delay should be put here(if doesn't work try increasing delay)
        if( window == NULL )
        {
...

After that, a white window opens successfully.

Already wrote to author of LazyFoo and hopefully he'll commit tutorial.

Best regards, V7

By experimenting, we have found that adding a short delay(~100ms) at the very start(after SDL_CreateWindow) fixes issue. This might mean that there is a conflict between OS's Dekstop/Window Manager and SDL when last renders too quickly. So, adding a short delay tells SDL to wait some time while OS's Dekstop/Window Manager handles window's creation. Also, this might be something related to OS's (D/E)M or its compositor(i.e. compiz) in our case KDE Plasma.

In other words, the changes:

...
        //Create window
        window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
        SDL_Delay(100); // A short delay should be put here(if doesn't work try increasing delay)
        if( window == NULL )
        {
...

After that, a white window opens successfully.

Already wrote to author of LazyFoo and hopefully he'll commit tutorial.

Best regards, V7