vs2010，重载windowProc，编写控件消息响应函数

vs2010，重载windowProc，编写控件消息响应函数

  (2012-11-06 21:27:21)

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标签：  杂谈

分类： MFC

来源：

http://blog.sina.com.cn/s/blog_6c8fad9f01014bt1.html

WM_COMMAND message:

http://msdn.microsoft.com/en-us/library/windows/desktop/ms647591(v=vs.85).aspx

winProc(message, wParam, lParam)
选择是WM_COMMAN的message；
根据wParam的高16位确定控件定义的通知码，比如对于COMBOBOX控件中的CBN_SELCHANGE消息码，意义是当combo当前选中的行的内容发生改变；
根据wParam的低16位确定控件的标识码；
对消息进行响应。
例子：
LRESULT CTestSolutionDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
    // TODO: Add your specialized code here and/or call the base class
    switch(message){
    case WM_COMMAND:
            if (LOWORD(wParam) >= IDC_CHECK_SELECT0 &&
                LOWORD(wParam) <= IDC_CHECK_SELECT9) {
                    enableWindowInLine(LOWORD(wParam) - IDC_CHECK_SELECT0,
                        IsDlgButtonChecked(LOWORD(wParam)));
            }
            else if(HIWORD(wParam) == CBN_SELCHANGE &&
                    LOWORD(wParam) >= IDC_COMBO_NAME0 &&
                    LOWORD(wParam) <= IDC_COMBO_NAME9) {
                        showMiContent(LOWORD(wParam) - IDC_COMBO_NAME0);
            }
            else if (LOWORD(wParam) >= IDC_EDIT_POS0 &&
                     LOWORD(wParam) <= IDC_EDIT_POS9) {
                        resetRange(LOWORD(wParam) - IDC_EDIT_POS0);
            }
            else if (LOWORD(wParam) >= IDC_EDIT_BITS0 &&
                    LOWORD(wParam) <= IDC_EDIT_BITS9) {
                         resetRange(LOWORD(wParam) - IDC_EDIT_BITS0);
            }
            break;