我试图做一个相当简单的工具来帮助调试变量值.因为它是完全自我包含在课堂内是我的目标.最终产品我可以在类中使用ShowThisValue(无论如何)中的函数.

我遇到的问题是,如果可能的话,我无法弄清楚课程内的程序.这是短版本,有问题.

-Code再次更新11/29 / 13-
– 我现在把它放在自己的项目中.

[main.cpp中]

viewvars TEST; // global
TEST.CreateTestWindow(hThisInstance); // in WinMain() right before ShowWindow(hwnd,nFunsterStil);

[viewvars.h]整个更新

class viewvars {

private:
    HWND hWindow;            // the window,a pointer to
    LRESULT WindowProc(UINT message,WPARAM wParam,LPARAM lParam);        
    static LRESULT CALLBACK ThisWindowProc(HWND hwnd,UINT message,LPARAM lParam);

public:        
    viewvars(); // blank constructor
    int CreateTestWindow(HINSTANCE hInst);

};

// blank constructor
viewvars::viewvars() {}



// create the window
int viewvars::CreateTestWindow(HINSTANCE hInst) {

// variables
char thisClassName[] = "viewVars";     
MSG msg;       
WNDCLASS wincl;  


// check for class info and modify the info
if (!GetClassInfo(hInst,thisClassName,&wincl)) {
    wincl.style = 0;
    wincl.hInstance = hInst;
    wincl.lpszClassName = thisClassName;
    wincl.lpfnWndProc = &ThisWindowProc;
    wincl.cbClsExtra = 0;
    wincl.cbWndExtra = 0;
    wincl.hIcon = NULL;
    wincl.hCursor = NULL;
    wincl.hbrBackground = (HBRUSH)COLOR_BTNSHADOW;
    wincl.lpszMenuName = NULL;

    if (RegisterClass(&wincl) == 0) {
        MessageBox(NULL,"The window class Failed to register.","Error",0); 
        return -1;
    }
}  

// create window
hWindow = CreateWindow(thisClassName,"Test",WS_POPUP | WS_CLIPCHILDREN,10,200,NULL,hInst,this);
if (hWindow == NULL) { 
    MessageBox(NULL,"Problem creating the window.",0); 
    return -1; 
} 

// show window
ShowWindow(hWindow,TRUE);

// message loop
while (GetMessage(&msg,hWindow,0))
{
    TranslateMessage(&msg);  
    DispatchMessage(&msg); 
}    

// then quit window?
DestroyWindow(hWindow);
hWindow = NULL;

return msg.wParam;
}   


// window proc
LRESULT CALLBACK viewvars::ThisWindowProc(HWND hwnd,LPARAM lParam) {

MessageBox(NULL,"Has it gone this far?","Bench",0); 

// variable
viewvars *view;

// ????
if (message == WM_NCCREATE) {
    CREATESTRUCT *cs = (CREATESTRUCT*)lParam; 
    view = (viewvars*) cs->lpCreateParams;

    SetLastError(0);
    if (SetWindowLongPtr(hwnd,GWL_USERDATA,(LONG_PTR) view) == 0) {
        if (GetLastError() != 0) {
            MessageBox(NULL,"There has been an error near here.",0); 
            return FALSE;
        }
    }
}
else {
    view = (viewvars*) GetWindowLongPtr(hwnd,GWL_USERDATA);
}


if (view) return view->WindowProc(message,wParam,lParam);

MessageBox(NULL,"If shown,the above statement did not return,and the statement below did.",0); 

return DefWindowProc(hwnd,message,lParam);
}


LRESULT viewvars::WindowProc(UINT message,LPARAM lParam) {
// you can access non-static members in here...
MessageBox(NULL,"Made it to window proc.",0);

switch (message)
{
    case WM_PAINT: 
        return 0;
    break;
    case WM_DESTROY:
        PostQuitMessage(0);       
        return 0;
    break;
    default:
        MessageBox(NULL,"DefWindowProc Returned.",0);
        return DefWindowProc(hWindow,lParam);
    break;
}
}

消息框按照以下顺序显示：

有没有这样呢？
>使其进行窗口处理
>返回DefWindowProc
有没有这样呢？ // 重复？
>使其进行窗口处理
>返回DefWindowProc
>创建窗口的问题

感谢您的帮助到目前为止.你知道问题在哪里吗？