It was done in the GetMessage call.

The heart of a windows application is something like:

while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
    TranslateMessage(&Msg);
    DispatchMessage(&Msg);
}

Each iteration gets a message and dispatches it. If there isn't a message available, it blocks until a message is available. Under 16-bit windows, the cpu was yielded while waiting for a new message.

Some other calls like Yield or SendMessage would work the same way. But GetMessage was the one that most GUI applications would have primarily used.

Source

It was done in the GetMessage call.

The heart of a windows application is something like:

while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
    TranslateMessage(&Msg);
    DispatchMessage(&Msg);
}

Each iteration gets a message and dispatches it. If there isn't a message available, it blocks until a message is available. Under 16-bit Windows, the CPU was yielded while waiting for a new message.

Some other calls like Yield or SendMessage would work the same way. But GetMessage was the one that most GUI applications would have primarily used.

Source

It was done in the GetMessage call.

The heart of a windows application is something like:

while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
    TranslateMessage(&Msg);
    DispatchMessage(&Msg);
}

Each iteration gets a message and dispatches it. If there isn't a message available, it blocks until a message is available. Under 16-bit windows, the cpu was yielded while waiting for a new message.

Source

It was done in the GetMessage call.

The heart of a windows application is something like:

while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
    TranslateMessage(&Msg);
    DispatchMessage(&Msg);
}

Each iteration gets a message and dispatches it. If there isn't a message available, it blocks until a message is available. Under 16-bit windows, the cpu was yielded while waiting for a new message.

Some other calls like Yield or SendMessage would work the same way. But GetMessage was the one that most GUI applications would have primarily used.

Source