自学教程：C++ GetOpenFileNameA函数代码示例

/* MAKE_EXPORT GetOpenFileNameA_fix=GetOpenFileNameA */BOOL WINAPI GetOpenFileNameA_fix(LPOPENFILENAMEA lpofn){	BOOL ret = GetOpenFileNameA(lpofn);	if (!ret && CommDlgExtendedError() == CDERR_STRUCTSIZE && lpofn 		&& lpofn->lStructSize == sizeof(OPENFILENAME))	{		lpofn->lStructSize = OPENFILENAME_SIZE_VERSION_400A;		ret = GetOpenFileNameA(lpofn);		lpofn->lStructSize = sizeof(OPENFILENAME);	}	return ret;}

void ProjectConfigDialog::onSelectScriptFile(void){    char buff[MAX_PATH + 1] = {0};    char projdir[MAX_PATH + 1] = {0};    GetDlgItemTextA(m_hwndDialog, IDC_EDIT_PROJECT_DIR, projdir, MAX_PATH);    OPENFILENAMEA ofn = {0};    ofn.lStructSize = sizeof(ofn);    ofn.hwndOwner = m_hwndDialog;    ofn.lpstrFilter = "Lua Script File (*.lua)/0*.lua/0";    ofn.lpstrTitle = "Select Script File";    if (DirectoryExists(projdir))    {        ofn.lpstrInitialDir = projdir;    }    ofn.Flags = OFN_DONTADDTORECENT | OFN_ENABLESIZING | OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST;    ofn.lpstrFile = buff;    ofn.nMaxFile = MAX_PATH;    if (GetOpenFileNameA(&ofn))    {        m_project.setScriptFile(buff);        updateScriptFile();    }}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR lpCmdLine, int nShowCmd){	char szPathName[MAX_PATH];	OPENFILENAMEA ofn;	ZeroMemory(&ofn, sizeof(ofn));	ofn.lStructSize = sizeof(ofn);	ofn.lpstrFile = szPathName;	ofn.lpstrFile[0] = '/0';	ofn.nMaxFile = MAX_PATH;	ofn.lpstrFilter = "Win32 executable files/0*.exe/0/0";	ofn.nFilterIndex = 1;	ofn.lpstrTitle = "Choose a file to protect";	ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;	int key_pressed = MessageBoxA(NULL, "CProtector - protector for executables/nWould you like to choose a file to protect?",		"CProtector", MB_OKCANCEL | MB_ICONQUESTION);	if	(key_pressed == IDCANCEL)	{		ExitProcess(0);	}	if(!GetOpenFileNameA(&ofn)) ExitProcess(0);	if(!ProtectFile(ofn.lpstrFile))	{		MessageBoxA(NULL, "Error occured : file is busy or error unknown","CProtector", MB_ICONERROR);	} else	{		MessageBoxA(NULL, "Protection installed","CProtector", MB_ICONINFORMATION);	}		ExitProcess(0);}

BOOL OpenFileDialog(HWND hwndDlg, OPENFILENAMEA*ofn, char*exe) {	//pointer zum exenamen	char* exename = NULL;	//buffer vom pfad	static char szFile[260] = ""; //static damit noch nach dem aufruf lesbar bleibt	//buffer vom filter	char szFilter[260] = "";	//backslash suchen	exename = strrchr(exe, '//') + 1;	//kein backslash dann normal ret als exenamen verwenden	if ((int)exename == 1) exename = exe;	//filterstring aufbauen	mir_snprintf(szFilter, SIZEOF(szFilter), "%s|%s|%s|*.*|", exename, exename, Translate("All Files"));	//umbruch in 0 wandeln	unsigned int sizeFilter = strlen(szFilter);	for (unsigned int i = 0; i < sizeFilter; i++)		if (szFilter[i] == '|') szFilter[i] = 0;	//openfiledia vorbereiten	memset(ofn, 0, sizeof(OPENFILENAMEA));	ofn->lStructSize = sizeof(OPENFILENAMEA);	ofn->hwndOwner = hwndDlg;	ofn->lpstrFile = szFile;	ofn->nMaxFile = SIZEOF(szFile);	ofn->lpstrFilter = szFilter;	ofn->nFilterIndex = 1;	ofn->lpstrFileTitle = exe;	ofn->nMaxFileTitle = 0;	ofn->lpstrInitialDir = NULL;	ofn->Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;	return GetOpenFileNameA(ofn);}

char* Platform::OpenFileDialog(){    const int32 FileNameSize = MAX_PATH;    char* FileName = (char*)malloc(FileNameSize);    OPENFILENAME DialogParams   = {};    DialogParams.lStructSize    = sizeof(OPENFILENAME);    DialogParams.hwndOwner      = GetActiveWindow();    DialogParams.lpstrFilter    = "JPEG/0*.jpg;*.jpeg/0PNG/0*.png/0";    DialogParams.nFilterIndex   = 2;    DialogParams.lpstrFile      = FileName;    DialogParams.lpstrFile[0]   = '/0';    DialogParams.nMaxFile       = FileNameSize;    DialogParams.Flags          = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;    BOOL Result = GetOpenFileNameA(&DialogParams); // TODO: Unicode support?    if (Result)    {        return FileName;    }    else    {        free(FileName);        return 0;    }}

bool ShowOpenFileDialog(char* FileName, int FileNameLength, char* filter)// Open a dialog for selecting a file and returns true if succeeded with the name of the file in the preallocated buffer <FileName>{    OPENFILENAMEA ofn ;    ZeroMemory(&ofn, sizeof(ofn));    ofn.lStructSize = sizeof(ofn);    ofn.hwndOwner = GetActiveWindow();     ofn.lpstrDefExt = 0;    FileName[0] = '/0';	ofn.lpstrFile = FileName;    ofn.nMaxFile = FileNameLength;    ofn.lpstrFilter = filter;     ofn.nFilterIndex = 1;    char strAux[MAX_PATH];	GetCurrentDirectoryA(MAX_PATH, strAux);	ofn.lpstrInitialDir = strAux;    ofn.lpstrTitle = LPSTR("Open File");    ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_ENABLESIZING;    GetOpenFileNameA(&ofn);    if (strlen(ofn.lpstrFile) == 0) return false;    return true;} // ShowOpenFileDialog

void CTextureAtlasCreatorContext::Load(){	CHAR8 strOpenName[512] = "";	OPENFILENAMEA FileName;	memset(&FileName, 0, sizeof(OPENFILENAMEA));	FileName.lStructSize = sizeof(OPENFILENAMEA);	FileName.hwndOwner = reinterpret_cast<HWND>(Ascension::Renderer().GetWindowHandle());	FileName.hInstance = reinterpret_cast<HINSTANCE>(GetModuleHandle(NULL));	FileName.lpstrFilter = NULL;	FileName.lpstrCustomFilter = NULL;	FileName.nMaxCustFilter = NULL;	FileName.lpstrFilter = "Ascension Atlas Files/0*.ascatl;*.ascatledt*/0/0";	FileName.nFilterIndex = 2;	FileName.lpstrFile = strOpenName;	FileName.nMaxFile = 512;	FileName.lpstrFileTitle = NULL;	FileName.lpstrTitle = "Open Atlas";	FileName.Flags = OFN_EXPLORER;	if(TRUE == GetOpenFileNameA(&FileName))	{		LoadAtlas(strOpenName);	}}

// TODO: fix alternate cohesion crapvoid OnCompressOrDecompress(HWND sheet, bool compress){	int size, ret;	char path[_MAX_PATH];	if (!GetOpenFileNameA(sheet, path, sizeof(path)))		return;	size = fsize(path);	std::vector<unsigned char> buffer(size);	AutoFile fIn(path, "rb");	fread(&buffer[0], sizeof(char), size, fIn.get()); // contiguous	fIn.close();	path[0] = '/0';   // don't pre-fill path	if (!GetSaveFileNameA(sheet, path, sizeof(path)))		return;	AutoFile fOut(path, "wb");	if (compress)		ret = deflate_file(&buffer[0], size, fOut.get());	else		ret = inflate_file(&buffer[0], size, fOut.get());	fOut.close();	if (ret >= 0)		MessageBox(sheet, "Operation completed successfully.",		"Raw Compression/Decompression", MB_OK);	else		MessageBox(sheet, "Operation failed.",		"Raw Compression/Decompression", MB_ICONWARNING);}

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