用FindWindowEx无法获取句柄
FindWindow返回了主窗口的句柄,但是FindWindowEx无法获取按钮的句柄
IntPtr ptrMainWnd = FindWindow(null,this.Text);
if (ptrMainWnd == IntPtr.Zero)
{
MessageBox.Show("No main window found");
return;
}
IntPtr ptrStartBtn = FindWindowEx(ptrMainWnd, IntPtr.Zero, null, buttonStart.Text);
if (ptrStartBtn == IntPtr.Zero)
{
MessageBox.Show("No start button found.");
return;
}