用C++编写的一个基于对话框的小程序 其功能是动态创建一个对话框 然后再对话框中显示一幅图像 点击该图像可获得图像的宽度和高度-With C++ Prepared a small dialog-based program and its function is to create a dynamic dialog box to display the dialog box and then click on an image the i