void CDJMasterDlg::OnDropFiles(HDROP hDropInfo)
{
UINT unFileCount;
WCHAR szFilePath[200];
unFileCount = DragQueryFile(hDropInfo, 0xFFFFFFFF, NULL, 0); //系统的API函数
for( UINT i=0;i < unFileCount;i++)
{
int pathLen = DragQueryFileW(hDropInfo, i, szFilePath, _countof(szFilePath)); //API函数
AddMusicFile(szFilePath);
}
DragFinish(hDropInfo); //API函数
CDialog::OnDropFiles(hDropInfo);
}
BOOL CALLBACK MainDlg_MusicPlayer_Proc(HWND hwnd, UINT uMeg, WPARAM wParam, LPARAM lParam)
{
switch (uMeg)
{
case WM_INITDIALOG:
{
//这一句非常重要，初始化MusicMessage的句柄和控件。
MusicMessage::InitMusicMessage(hwnd, IDC_LISTMUSIC);
//初始化音乐播放模式复选框。
InitPlayModeMessage(hwnd);
//读取上一次音乐播放器关闭后保存的列表数据，该函数必须在MusicMessage::InitMusicMessage(hwnd, IDC_LISTMUSIC);后调用。
InitMusicList(hwnd);
//创建当前音乐播放器主界面中当前显示歌词的字体。
hCurMusicLrcFont = CreateMusicLrcFont(hwnd, GB2312_CHARSET, OUT_OUTLINE_PRECIS, TEXT("楷体"), 27, DEFAULT_QUALITY);
hNotCurMusicLrcFont = CreateMusicLrcFont(hwnd, GB2312_CHARSET, CLIP_DEFAULT_PRECIS, TEXT("楷体"), 17, DEFAULT_QUALITY);
//获得音乐界面的背景。
RECT musicTabRect;
GetClientRect(hwnd, &musicTabRect);
HBITMAP hMusicTabBkgndBmp = (HBITMAP)LoadImage((HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE),
MAKEINTRESOURCE(IDB_MusicTab_Bkgnd), IMAGE_BITMAP, 0, 0, LR_DEFAULTSIZE | LR_CREATEDIBSECTION | LR_SHARED);
//获得主界面背景画刷。
hMusicTabBkgndBrush = GetBkgndImage(hwnd, hMusicTabBkgndBmp, musicTabRect);
//初始化歌词列表控件，确保背景能够出现。
SendMessage(GetDlgItem(hwnd, IDC_MusicLrcPrevious), LB_INSERTSTRING, (WPARAM)-1, (LPARAM)TEXT(""));
SendMessage(GetDlgItem(hwnd, IDC_CurMusicLrc), LB_INSERTSTRING, (WPARAM)-1, (LPARAM)TEXT(""));
SendMessage(GetDlgItem(hwnd, IDC_MusicLrcNext), LB_INSERTSTRING, (WPARAM)-1, (LPARAM)TEXT(""));
//释放资源。
DeleteObject(hMusicTabBkgndBmp);
//设置控件的tip提示信息。
// InitMusicTabDlgCtrolTip(hwnd);
//2注册音乐播放列表窗口支持拖拽文件。
DragAcceptFiles(GetDlgItem(MusicMessage::GetMusicWindowHwnd(), MusicMessage::GetMusicListControlID()), TRUE);
}
return TRUE;
case WM_DROPFILES://文件拖拽第三步。
{
HDROP hDrop = (HDROP)wParam;
//If the index value is 0xFFFFFFFF, the return value is a count of
//the dropped files. Note that the index variable itself returns unchanged, and therefore remains 0xFFFFFFFF.
vector<wstring> dropFileNameVector;
UINT nDropFileCount = DragQueryFile(hDrop, 0xFFFFFFFF, NULL, 0);//获得拖拽文件的总数。
TCHAR szDropFileName[MAX_PATH] = { NULL };
for (int index = 0; index < nDropFileCount; index++)
{
DragQueryFile(hDrop, index, szDropFileName, MAX_PATH);//获得拖拽的文件名。
dropFileNameVector.push_back(szDropFileName);
}
DragFinish(hDrop);
AddMusicMessageFromVector(dropFileNameVector);
}
return TRUE;
case WM_LBUTTONDOWN:
{
//鼠标能够拖动界面移动。
// HWND hPWND = GetParent(hwnd);
// SendMessage(GetParent(hwnd), WM_LBUTTONDOWN, (WPARAM)0, (LPARAM)0);//无效，为什么？
if (MusicMessage::GetMusicVolumeWnd())//检测音量窗口是否存在。
{
DestroyWindow(MusicMessage::GetMusicVolumeWnd());//关闭窗口。
MusicMessage::SetMusicVolumeWnd(NULL);
}
if (MusicMessage::GetSearchMusicItemWnd())//检测搜索条目窗口是否存在。
{
DestroyWindow(MusicMessage::GetSearchMusicItemWnd());
MusicMessage::SetSearchMusicItemWnd(NULL);
}
}
return TRUE;
case WM_MOVE:
{//tab父窗口移动的时候，子窗口无法接收WM_MOVE消息，相对位置不变的缘故？
}
return TRUE;
case WM_COMMAND:
{
switch (LOWORD(wParam))
{
case IDC_MusicVolume:
{
if (!MusicMessage::GetMusicVolumeWnd())//音量窗口未打开的时候。
{
//获得音量按钮的位置。
RECT volBtnScreenRect;
GetWindowRect(GetDlgItem(hwnd, IDC_MusicVolume), &volBtnScreenRect);
HWND hMusicVolWnd = CreateDialogParam((HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE), MAKEINTRESOURCE(IDD_MusicVolume),
hwnd, MusicVolumeDlg_Proc, (LPARAM)&volBtnScreenRect);
MusicMessage::SetMusicVolumeWnd(hMusicVolWnd);
}
else//此时要关闭音量窗口。
{
DestroyWindow(MusicMessage::GetMusicVolumeWnd());
//关闭之后还要将MusicMessage中音量窗口的句柄设成零。
MusicMessage::SetMusicVolumeWnd(NULL);
}
}
return TRUE;
case IDC_Operate_File_BTN:
LoadOperateFileMenu(hwnd);
return TRUE;
case IDC_MusicPlayMode://改变音乐播放模式的时候。
{
int iPlayMode = SendMessage(GetDlgItem(hwnd, IDC_MusicPlayMode),CB_GETCURSEL, (WPARAM)0, (LPARAM)0);
if (iPlayMode == CB_ERR)
{
return TRUE;//直接返回不做处理。
}
MusicMessage::SetMusicPlayMode(iPlayMode);
}
return TRUE;
case IDC_LISTMUSIC:
{
switch (HIWORD(wParam))
{
case LBN_DBLCLK://当该音乐播放列表被双击的时候。
MusicMessage::PlayMusic();
return TRUE;
default:
return FALSE;
}
}
return TRUE;
//菜单选项。
case ID_Add_LocalMusic_File:
case ID_AddMusicFileToList:
{
AddMusicFile(hwnd);
}
return TRUE;
case IDC_PlayPauseMusicButton://按下音乐播放按钮。
case ID_PlayMusicItem:
{
MusicMessage::PlayMusic();
}
return TRUE;
case ID_DeleteMusicListItem://从音乐播放器列表中删除一个曲目。
{
DeleteMusicItemFromList(MusicMessage::GetCurSelMusicFromMusicListControl());
}
return TRUE;
case ID_DeleteMusicListItem_Storage:
{
DeleteMusicItemFromDisk(MusicMessage::GetCurSelMusicFromMusicListControl());
}
return TRUE;
case ID_EmptyMusicList://清空音乐播放列表中的所有条目
case ID_Clear_MusicList:
{
ClearAllMusicItemFromList();
}
return TRUE;
case ID_Add_LocalMusic_Folder:
case ID_Add_LocalMusic_Folder_RC:
{
AddLocalMusicFolder(hwnd,false);
}
return TRUE;
case IDC_StopMusicButton://停止音乐的播放。
{
MusicMessage::CloseMusic();
}
return TRUE;
case IDC_Go_KT_Music://快退播放音乐。
{
MusicMessage::PlayMusicFrom(MusicMessage::GetCurMusicPos() - 5000);
}
return TRUE;
case IDC_Go_KJ_Music://快进播放音乐。
{
MusicMessage::PlayMusicFrom(MusicMessage::GetCurMusicPos() + 5000);
}
return TRUE;
case IDC_Go_Last_Music://播放上一曲。
{
MusicMessage::PlayNextOrLast(-1);
}
return TRUE;
case IDC_Go_Next_Music://播放下一曲。
{
MusicMessage::PlayNextOrLast(1);
}
return TRUE;
case IDC_DesktopLrc:
{
if (!MusicMessage::GetDeskTopLrcState())//把歌词窗口打开。
{
HWND hDTLWnd = CreateDialog((HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE), MAKEINTRESOURCE(IDD_DeskTopSingleLrcDlg),
NULL, DeskTop_SingleLrcDlg_Proc);
MusicMessage::SetDeskTopLrcState(true);
MusicMessage::SetDeskTopLrcWnd(hDTLWnd);
}
else
{
MusicMessage::SetDeskTopLrcState(false);
DestroyWindow(MusicMessage::GetDeskTopLrcWnd());//关闭歌词窗口。
}
}
return TRUE;
case IDC_SearchMusicItem://弹出搜索窗口。
{
if (!MusicMessage::GetSearchMusicItemWnd())//当搜索窗口还没有打开的时候。
{
//打开搜索窗口，并提供搜索窗口显示的位置。
RECT searchItemBtnRect;
GetWindowRect(GetDlgItem(hwnd, IDC_SearchMusicItem), &searchItemBtnRect);//屏幕坐标。
HWND hSearchItemDlgWnd = CreateDialogParam((HINSTANCE)GetWindowLong(hwnd, GWLP_HINSTANCE),
MAKEINTRESOURCE(IDD_SearchItemDlg), hwnd, SearchEditDlg_Proc, (LPARAM)&searchItemBtnRect);
MusicMessage::SetSearchMusicItemWnd(hSearchItemDlgWnd);
}
else
{
//获得文本框内的数据。
//获取数据后关闭窗口。
DestroyWindow(MusicMessage::GetSearchMusicItemWnd());
MusicMessage::SetSearchMusicItemWnd(NULL);
}
}
return TRUE;
/* case ID_QuitApp://该菜单项无意义。
{
EndDialog(GetParent(hwnd), 0);//关闭主窗口。
}
return TRUE;*/
default:
return FALSE;
}
}
return TRUE;//这里TRUE or FALSE已经无所谓了。
case WM_MUSICEND://一首音乐播放完成之后，定时器函数中会发送这个消息给窗口，窗口响应该消息后调用函数播放下一首音乐。
{
MusicMessage::AutoPlayNextMusic();
}
return TRUE;
case WM_SEARCHITEMMSG://接受搜索框传过来的搜索消息。
{
TCHAR szSearchItemMsg[MAX_PATH] = { NULL };
lstrcpy(szSearchItemMsg, (TCHAR*)wParam);//拷贝搜索框传过来的搜索消息。
// MessageBox(hwnd, szSearchItemMsg, TEXT("Message"), MB_OK);
//开始音乐列表的搜索操作。
MusicMessage::FindMusicItemFromMusicList(szSearchItemMsg);
}
return TRUE;
case WM_CONTEXTMENU://The WM_CONTEXTMENU message notifies a window that the user clicked the right mouse button (right-clicked) in the window.
{
HWND hClickWnd = (HWND)wParam;
int iXcoordinate = (int)LOWORD(lParam);//这两个都是点击时的屏幕坐标。
int iYcoordinate = (int)HIWORD(lParam);
//看是来自哪个控件的右键点击操作。
switch (GetDlgCtrlID(hClickWnd))
{
case IDC_LISTMUSIC:
{
HWND hMusicListWnd = GetDlgItem(hwnd, IDC_LISTMUSIC);
HMENU hMenu = LoadMenu((HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE),
MAKEINTRESOURCE(IDR_MusicList_RightClick_Menu));
hMenu = GetSubMenu(hMenu, 0);
RECT musicListScreenRect;
GetWindowRect(hMusicListWnd, &musicListScreenRect);//获得此时音乐列表的屏幕坐标。
int iTopIndex = SendMessage(hMusicListWnd, LB_GETTOPINDEX, (WPARAM)0, (LPARAM)0);
int iMusicListItemHeight = SendMessage(hMusicListWnd, LB_GETITEMHEIGHT, (WPARAM)iTopIndex, (LPARAM)0);//就先取第零项的高度试一下。
if (iMusicListItemHeight == LB_ERR)
{
MessageBox(hwnd, TEXT("在获取音乐列表的每一项的高度时发生错误！"), TEXT("ERROR"), MB_OK | MB_ICONERROR);
}
int iCurIndex = iTopIndex + (int)((iYcoordinate - musicListScreenRect.top) / iMusicListItemHeight);
SendMessage(hMusicListWnd, LB_SETCURSEL, (WPARAM)iCurIndex, (LPARAM)0);
TrackPopupMenuEx(hMenu, TPM_LEFTALIGN, iXcoordinate, iYcoordinate, hwnd, NULL);
}
return TRUE;
default:
return FALSE;
}
}
return TRUE;
case WM_HSCROLL:
{
switch (GetDlgCtrlID((HWND)lParam))
{
case IDC_MusicSlider:
PlayingSliderChange(hwnd, (HWND)lParam, wParam);
return TRUE;
default:
return FALSE;
}
}
return TRUE;
case WM_CTLCOLORDLG:
{
HDC hDlgDC = (HDC)wParam;
HWND hDlgWnd = (HWND)lParam;
}
return (BOOL)hMusicTabBkgndBrush;
case WM_CTLCOLORSTATIC:
{
HDC hStaticDC = (HDC)wParam;
HWND hStaticWnd = (HWND)lParam;
SetBkMode(hStaticDC, TRANSPARENT);
}
return (BOOL)hMusicTabBkgndBrush;
case WM_CTLCOLOREDIT:
{
HDC hEditDC = (HDC)wParam;
HWND hEditWnd = (HWND)lParam;
SetBkMode(hEditDC, TRANSPARENT);
}
return (BOOL)hMusicTabBkgndBrush;
case WM_CTLCOLORLISTBOX:
{
HDC hListDC = (HDC)wParam;
HWND hListWnd = (HWND)lParam;
SetBkMode(hListDC, TRANSPARENT);//设置背景透明。
switch (GetDlgCtrlID(hListWnd))
{
//lParam The low - order word of lParam specifies whether the control should be redrawn immediately upon
// setting the font.If this parameter is TRUE, the control redraws itself. 不断重画 就会不断闪烁。
case IDC_CurMusicLrc:
{
SendMessage(hListWnd, WM_SETFONT, (WPARAM)hCurMusicLrcFont, (LPARAM)0);
}
return (BOOL)hMusicTabBkgndBrush;
// return (BOOL)hCurMusicLrcListBrush;
case IDC_MusicLrcPrevious:
{
SendMessage(hListWnd, WM_SETFONT, (WPARAM)hNotCurMusicLrcFont, (LPARAM)0);
}
return (BOOL)hMusicTabBkgndBrush;
// return (BOOL)hMusicLrcPreviousListBrush;
case IDC_MusicLrcNext:
{
SendMessage(hListWnd, WM_SETFONT, (WPARAM)hNotCurMusicLrcFont, (LPARAM)0);
}
return (BOOL)hMusicTabBkgndBrush;
// return (BOOL)hMusicLrcNextListBrush;
case IDC_LISTMUSIC:
{
}
return (BOOL)hMusicTabBkgndBrush;
// return (BOOL)hMusicListBrush;
default:
break;
}
}
// return (BOOL)hMusicTabBkgndBrush;
return TRUE;
// return FALSE;
case WM_CTLCOLORSCROLLBAR:
{
HDC hScrollBarDC = (HDC)wParam;
HWND hScrollBarWnd = (HWND)lParam;
SetBkMode(hScrollBarDC, TRANSPARENT);
}
return (BOOL)hMusicTabBkgndBrush;
case WM_DRAWITEM:
{
LPDRAWITEMSTRUCT lpDrawItemStruct = (LPDRAWITEMSTRUCT)lParam;
//根据自绘控件的不同类型进行不同的操作。
switch (lpDrawItemStruct->CtlType)
{
case ODT_BUTTON:
{
DrawBkgndToButton(hwnd, wParam, (LPDRAWITEMSTRUCT)lParam);
}
return TRUE;
case ODT_LISTBOX:
{
switch (wParam)//Specifies the identifier of the control that sent the WM_DRAWITEM message.
{
case IDC_LISTMUSIC:
{
RedrawMusicList(hwnd, (LPDRAWITEMSTRUCT)lParam);
}
return TRUE;
case IDC_CurMusicLrc://主界面当前行的歌词。
{
RedrawCurMusicLrc(hwnd, (LPDRAWITEMSTRUCT)lParam);
}
return FALSE;
case IDC_MusicLrcPrevious://前向歌词。
{
RedrawPreviousMusicLrc(hwnd, (LPDRAWITEMSTRUCT)lParam);
}
return TRUE;
case IDC_MusicLrcNext:
{
RedrawNextMusicLrc(hwnd, (LPDRAWITEMSTRUCT)lParam);
}
return TRUE;
default:
break;
}
}
return TRUE;
case ODT_COMBOBOX:
{
switch (wParam)
{
case IDC_MusicPlayMode:
{
SetBkMode(lpDrawItemStruct->hDC, TRANSPARENT);
FillRect(lpDrawItemStruct->hDC, &lpDrawItemStruct->rcItem, hMusicTabBkgndBrush);
RedrawPlayModeComboBox(hwnd, (LPDRAWITEMSTRUCT)lParam);
}
return TRUE;
default:
break;
}
}
return TRUE;
default:
return FALSE;
}
}
return TRUE;//看一下 return TRUE会不会异常。
case WM_CLOSE:
{
//释放资源。
DeleteObject(hCurMusicLrcFont);
DeleteObject(hNotCurMusicLrcFont);
//保存播放器的一些信息。
// SaveMusicPlayerMessage(hwnd);关闭的时候这个WM_CLOSE没有被调用，怎么回事？
DestroyWindow(hwnd);
}
return TRUE;
}
return FALSE;
}
