请教达人

Question

我用C语言创建了一个按纽 编译无错,运行时按纽不显示
分别用了WS_VISIBLE 和ShowWindow()都没效果
这是怎么回事?还望赐教.

Answer 1

呵呵 不好意思 这是代码
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{   
     static HWND hwndchild; 
     switch (message)                  
    {
        case WM_CREATE:
            
            hwndchild = CreateWindow("button1","确定",
            WS_CHILD|WS_VISIBLE|BS_DEFPUSHBUTTON,
            100,200,100,50,
            hwnd,(HMENU)1,
            ((LPCREATESTRUCT) lParam)->hInstance, NULL);
                
            
            return 0;         case WM_DESTROY:
            PostQuitMessage (0);       
            break;
        default:                      
            return DefWindowProc (hwnd, message, wParam, lParam);
    }    return 0;
}

Answer 2

如果创建预定义窗口，第一个参数（窗口类名）应该是"BUTTON"而不是"BUTTON1"，如果是自定义窗口，则首先需要登记窗口类才能创建窗口

Answer 3

switch   (message)                                     
        { 
                case   WM_CREATE: 
                        
                        hwndchild   =   CreateWindow("button1","确定", 
                        WS_CHILD ¦WS_VISIBLE ¦BS_DEFPUSHBUTTON, 
                        100,200,100,50, 
                        hwnd,(HMENU)1, 
                        ((LPCREATESTRUCT)   lParam)-> hInstance,   NULL); 
                                
                        
                        return   0;   
                case   WM_COMMAND:
                     wmId    = LOWORD(wParam); 
wmEvent = HIWORD(wParam); 
                     switch(wmID)
                     {
                     case ID_BUTTON1:      //你怎么的也的响应WM_COMMAND消息阿
                          MessageBox(NULL,"我是新人","Tip",MB_OK); 
                           break;
                     case ID_OTHER:
                        break;
                     }
                     break;
                case   WM_DESTROY: 
                        PostQuitMessage   (0);               
                        break; 
                default:                                             
                        return   DefWindowProc   (hwnd,   message,   wParam,   lParam); 
        } 

Answer 4

谢谢楼上 问题解决了 我这是预定义窗口那如果我想再加一个按钮,我该怎样做呢 是否还用"BUTTON"做类名?

Answer 5

hwndchild = CreateWindow("button","确定", WS_CHILD ¦WS_VISIBLE ¦BS_DEFPUSHBUTTON,   
            100,200,100,50,
            hwnd,(HMENU)1, ((LPCREATESTRUCT)lParam)->hInstance,NULL);   
 

Answer 6

一样的，所有按钮窗口类名都是BUTTON，继续创建去