主页上的例子直接编译好多都编译不过去，老哥不改改嘛？ #280

#include <LCUI.h>
#include <LCUI/gui/widget.h>
#include <LCUI/gui/widget/textview.h>
#include <LCUI/gui/widget/textedit.h>
#include <LCUI/gui/widget/button.h>

void OnButtonClick(LCUI_Widget self, LCUI_WidgetEvent e, void *arg)
{
    wchar_t str[256] = { 0 };
    LCUI_Widget text = ((LCUI_Widget*)e->data)[0];
    LCUI_Widget input = ((LCUI_Widget*)e->data)[1];

    TextEdit_GetTextW(input, 0, 255, str);
    TextView_SetText(text, str);
}

int main(void)
{
    LCUI_Widget root;
    LCUI_Widget text;
    LCUI_Widget button;
    LCUI_Widget input;
    LCUI_Widget button_data[2];

    LCUI_Init();
    root = LCUIWidget_GetRoot();
    text = LCUIWidget_New("textview");
    input = LCUIWidget_New("textedit");
    button = LCUIWidget_New("button");
    button_data[0] = text;
    button_data[1] = input;
    TextView_SetTextW(text, L"Hello, World!");
    TextEdit_SetPlaceholderW(input, L"Please input...");
    Button_SetTextW(button, "Change");
    Widget_BindEvent(button, "click", OnButtonClick, button_data, NULL);
    Widget_Append(root, text);
    Widget_Append(root, input);
    Widget_Append(root, button);
    return LCUI_Main();
}

比如这个TextView_SetText 应该为 TextView_SetTextW

还有 Button_SetTextW(button, "Change") 应该为Button_SetTextW(button, L"Change")

新手看了例子更加一头雾水