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;