到目前为止我已经写了这个函数:
int CMFCApplication3App::DoMessageBox(LPCTSTR lpszPrompt, UINT nType, UINT nIDPrompt)
{
CString strContent = CString(lpszPrompt);
CString strTitle; strTitle.LoadString(AFX_IDS_APP_TITLE);
CTaskDialog dlgTaskMessageBox(strContent, _T(""), strTitle);
int iPixelWidth = (::GetSystemMetrics(SM_CXSCREEN) / 100) * 30;
int iDialogUnitsWidth = MulDiv(iPixelWidth, 4, LOWORD(GetDialogBaseUnits()));
dlgTaskMessageBox.SetDialogWidth(iDialogUnitsWidth);
/*
if (nType & MB_ICONINFORMATION)
dlgTaskMessageBox.SetMainIcon(TD_INFORMATION_ICON);
if (nType & MB_ICONERROR)
dlgTaskMessageBox.SetMainIcon(TD_ERROR_ICON);
if (nType & MB_ICONWARNING)
dlgTaskMessageBox.SetMainIcon(TD_WARNING_ICON);
if (nType & MB_ICONQUESTION)
{
HICON hIcon = LoadIcon(IDI_QUESTION);
dlgTaskMessageBox.SetMainIcon(hIcon);
}
int iButtons = 0;
if (nType & IDYES)
iButtons |= TDCBF_YES_BUTTON;
if (nType & IDNO)
iButtons |= TDCBF_NO_BUTTON;
if (nType & IDCANCEL)
iButtons |= TDCBF_CANCEL_BUTTON;
if (nType & IDOK)
iButtons |= TDCBF_OK_BUTTON;
if (nType & IDRETRY)
iButtons |= TDCBF_RETRY_BUTTON;
dlgTaskMessageBox.SetCommonButtons(iButtons);
*/
if (nType == (MB_YESNOCANCEL | MB_ICONERROR))
{
dlgTaskMessageBox.SetCommonButtons(TDCBF_YES_BUTTON | TDCBF_NO_BUTTON | TDCBF_CANCEL_BUTTON);
dlgTaskMessageBox.SetMainIcon(TD_ERROR_ICON);
}
if (nType == (MB_YESNOCANCEL | MB_ICONWARNING))
{
dlgTaskMessageBox.SetCommonButtons(TDCBF_YES_BUTTON | TDCBF_NO_BUTTON | TDCBF_CANCEL_BUTTON);
dlgTaskMessageBox.SetMainIcon(TD_WARNING_ICON);
}
if (nType == (MB_YESNOCANCEL | MB_ICONINFORMATION))
{
dlgTaskMessageBox.SetCommonButtons(TDCBF_YES_BUTTON | TDCBF_NO_BUTTON | TDCBF_CANCEL_BUTTON);
dlgTaskMessageBox.SetMainIcon(TD_INFORMATION_ICON);
}
/*
if (nType == (MB_YESNOCANCEL | MB_ICONQUESTION))
{
dlgTaskMessageBox.SetCommonButtons(TDCBF_YES_BUTTON | TDCBF_NO_BUTTON | TDCBF_CANCEL_BUTTON);
HICON hIcon = LoadIcon(IDI_QUESTION);
dlgTaskMessageBox.SetMainIcon(hIcon);
}
*/
return dlgTaskMessageBox.DoModal();
}
我有两个问题,很高兴分成两个问题:
- 使用
IDI_QUESTION
导致应用程序崩溃。 - 有没有一种更简单的方法可以将
nType
解码为所需的各种按钮和图标?
最佳答案
Using
IDI_QUESTION
is causing the application to crash
那是因为 IDI_QUESTION
是一个 standard icon并且必须通过将 NULL
实例句柄传递给 ::LoadIcon
来加载,但 MFC 的 CWinApp::LoadIcon
改为传递 AfxGetResourceHandle()
。下面绕过MFC,直接调用Win32 API。
HICON hIcon = ::LoadIcon(NULL, IDI_QUESTION);
Isn't there an easier way to decode nType into the various buttons and icon required?
不是很容易,但可以将它们分组以减少重复。
int nCommonButtons = 0;
switch(nType)
{
case MB_YESNOCANCEL:
nCommonButtons |= TDCBF_CANCEL_BUTTON;
case MB_YESNO:
nCommonButtons |= TDCBF_YES_BUTTON | TDCBF_NO_BUTTON;
break;
case MB_OKCANCELRETRY:
nCommonButtons |= TDCBF_RETRY_BUTTON;
case MB_OKCANCEL:
nCommonButtons |= TDCBF_CANCEL_BUTTON;
case MB_OK:
nCommonButtons |= TDCBF_OK_BUTTON;
break;
//... etc
}
关于visual-c++ - 使用 DoMessageBox 将 AfxMessageBox 转换为 CTaskDialog,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/66013767/