MessageBox倒计时问题

[gdhuman]

我在Time1里面用了倒计时MessageBox

HHOOK hook=NULL;
int MSGRET=0;
int timek=0;
HWND MSGHWND,TEXTHWND;
UINT TD;
String MessageBoxString="";
void CALLBACK TimerProc(HWND hwnd,UINT uMsg,UINT idEvent, DWORD dwTime )
{
if (timek==0)
{
timek=30;
SendMessageA(MSGHWND,WM_COMMAND,7,0); //计时结束后传回的值
}
else
{
timek--;
char title[100]={0};
sprintf(title,(MessageBoxString+"\n退出时间还剩: %d 秒").c_str(),timek);
SetWindowText(TEXTHWND,title);
}
}

LRESULT CALLBACK CBTProc(
int nCode, // hook code
WPARAM wParam, // depends on hook code
LPARAM lParam // depends on hook code
)
{
if (nCode==WH_CBT)
{
UnhookWindowsHookEx(hook);
timek=30;
MSGHWND=(HWND)wParam;
TEXTHWND=GetDlgItem(MSGHWND,65535);
TD=SetTimer(0,1,1000,(TIMERPROC)TimerProc);
}


return 0;
}
//----------------------------------------------------------
上面是倒计时实现回调函数
下面是time1的代码
//-----------------------------------------------------------
void __fastcall TGDFast::Timer1Timer(TObject *Sender)
{
Timer1->Enabled=false;
MessageBox(this->Handle,(MessageBoxString+"\n退出时间还剩: 30 秒").c_str(),"新增提示",MB_YESNO+MB_ICONWARNING+MB_DEFBUTTON2);
Timer1->Interval=10000;
Timer1->Enabled=true;
}

问题如下：第一次显示倒计时是正确的，但是第二次开始倒计时开始变得步长变成2，第三次步长是4，越来越快。请问如何解决，是不是没有killtime或者是没有初始化。请给出详细代码和解释，谢谢

[gdhuman]

补充一下代码 void __fastcall TGDFast::Timer1Timer(TObject *Sender) { Timer1->Enabled=false; hook = SetWindowsHookEx(WH_CBT,(HOOKPROC)CBTProc,GetModuleHandle(NULL),0); MessageBox(this->Handle,(MessageBoxString+"\n退出时间还剩: 30 秒").c_str(),"新增提示",MB_YESNO+MB_ICONWARNING+MB_DEFBUTTON2); Timer1->Interval=10000; Timer1->Enabled=true; }

[ccrun.com]

先试试API：MessageBoxTimeout能否满足你需求？

[soloxiao]

转发一下，只是MessageBoxTimeout无法显示还剩几秒钟，如果直接新建一个Dialog加Timer也很简单快捷 #include <windows.h> #include <tchar.h> //Functions & other definitions required--> typedef int (__stdcall *MSGBOXAAPI)(IN HWND hWnd, IN LPCSTR lpText, IN LPCSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds); typedef int (__stdcall *MSGBOXWAPI)(IN HWND hWnd, IN LPCWSTR lpText, IN LPCWSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds); int MessageBoxTimeoutA(IN HWND hWnd, IN LPCSTR lpText, IN LPCSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds); int MessageBoxTimeoutW(IN HWND hWnd, IN LPCWSTR lpText, IN LPCWSTR lpCaption, IN UINT uType, IN WORD wLanguageId, IN DWORD dwMilliseconds); #ifdef UNICODE #define MessageBoxTimeout MessageBoxTimeoutW #else #define MessageBoxTimeout MessageBoxTimeoutA #endif #define MB_TIMEDOUT 32000 int MessageBoxTimeoutA(HWND hWnd, LPCSTR lpText, LPCSTR lpCaption, UINT uType, WORD wLanguageId, DWORD dwMilliseconds) { static MSGBOXAAPI MsgBoxTOA = NULL; if (!MsgBoxTOA) { HMODULE hUser32 = GetModuleHandle(_T("user32.dll")); if (hUser32) { MsgBoxTOA = (MSGBOXAAPI)GetProcAddress(hUser32, "MessageBoxTimeoutA"); //fall through to 'if (MsgBoxTOA)...' } else { //stuff happened, add code to handle it here //(possibly just call MessageBox()) return 0; } } if (MsgBoxTOA) { return MsgBoxTOA(hWnd, lpText, lpCaption, uType, wLanguageId, dwMilliseconds); } return 0; } int MessageBoxTimeoutW(HWND hWnd, LPCWSTR lpText, LPCWSTR lpCaption, UINT uType, WORD wLanguageId, DWORD dwMilliseconds) { static MSGBOXWAPI MsgBoxTOW = NULL; if (!MsgBoxTOW) { HMODULE hUser32 = GetModuleHandle(_T("user32.dll")); if (hUser32) { MsgBoxTOW = (MSGBOXWAPI)GetProcAddress(hUser32, "MessageBoxTimeoutW"); //fall through to 'if (MsgBoxTOW)...' } else { //stuff happened, add code to handle it here //(possibly just call MessageBox()) return 0; } } if (MsgBoxTOW) { return MsgBoxTOW(hWnd, lpText, lpCaption, uType, wLanguageId, dwMilliseconds); } return 0; } //End required definitions <--