Is anyone kindly to tell me how can i save and resotre the child frames that last opened in a MDI program? In the Main Frame,left side is a Tree Pane,when we selected a tree item and double click,it will create a corresponding child frame,The Child Frames are created dynamicly. When i close the program ,i need to save the status of the opened frame and open them the next time i start the program. Is anybody can give me an example?

for example: dlg.SendMessage(WM_SIZE,SIZE_MAXIMIZED,0); you can try this.