private void frmMain_Load(object sender, EventArgs e)
{
ff = new frmFrame();
ff.Show();
ff.BackgroundImage = Image.FromFile(@"Frame\1.png");
ff.Left = pbCompose.Left + this.Left;
ff.Top = pbCompose.Top + this.Top;
} private void frmMain_LocationChanged(object sender, EventArgs e)
{
AAA: ff.Left = pbCompose.Left + this.Left;
ff.Top = pbCompose.Top + this.Top;
}运行的时候AAA处提示:未将对象引用设置到对象实例。为什么呀?为什么Load里可以。应该怎么做。
{
ff = new frmFrame();
ff.Show();
ff.BackgroundImage = Image.FromFile(@"Frame\1.png");
ff.Left = pbCompose.Left + this.Left;
ff.Top = pbCompose.Top + this.Top;
} private void frmMain_LocationChanged(object sender, EventArgs e)
{
AAA: ff.Left = pbCompose.Left + this.Left;
ff.Top = pbCompose.Top + this.Top;
}运行的时候AAA处提示:未将对象引用设置到对象实例。为什么呀?为什么Load里可以。应该怎么做。
而LocationChanged里 ff 可能未定义,所以“未将对象引用设置到对象实例”。
{
ff.Left = pbCompose.Left + this.Left;
……
}