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我有一个Logitech LCD SDK的问题。一切正常，但两件简单的事情不起作用。首先，我无法获得进度条的工作。我每秒更新一次进度栏的值，并更新屏幕。什么都没有发生。我已经测试了从0到100和从0到1的值，没有不同。Logitech液晶SDk（C++）
第二个问题是VS2012中的图像。我无法在C++ Dll中加载图像。 下面的代码是我的Logitech类，其中包含屏幕的所有数据。 完整的数据来源于BitBucket。
我希望有人能帮助我吗？
编辑：问题出在进度条上。其余所有工作的代码例如。它吸引了罗技液晶显示屏上的所有内容，甚至是进度条，时间......但真正的问题在于进度条的进度。这个酒吧背景完美，但进度条不移动，似乎已经固定在15％左右的进度。通常情况下，进度必须与音乐时间相关联，例如，如果音乐文件为3分钟，则意味着180秒必须以100％进度进行传播。但这不起作用！
//-----------------------------------------------------------------
// Logitech File
// C++ Source - Logitech.cpp - version 2012 v1.0
//-----------------------------------------------------------------
//-----------------------------------------------------------------
// Include Files
//-----------------------------------------------------------------
#include "stdafx.h"
#include "Logitech.h"
//-----------------------------------------------------------------
// Logitech methods
//-----------------------------------------------------------------
//This LogitechObject is a instance of the Logitech class for using in the thread
Logitech * Logitech::LogitechObject;
Logitech::Logitech(): stopthread(false), firstTime(true), position(0), duration(0)
{
LogitechObject = this;
}
Logitech::~Logitech()
{
stopthread = true;
this->state = StatePlay::Undefined;
timerThread.detach();
}
bool Logitech::getFirstTime()
{
return firstTime;
}
//Initialise Logitech LCD
BOOL Logitech::OnInitDialog()
{
HRESULT hRes = m_lcd.Initialize(_T("MusicBee"), LG_DUAL_MODE, FALSE, TRUE);
if (hRes != S_OK)
{
return FALSE;
}
//Create home screen Logitech Color LCD
if(m_lcd.IsDeviceAvailable(LG_COLOR))
{
m_lcd.ModifyDisplay(LG_COLOR);
logo = m_lcd.AddText(LG_STATIC_TEXT, LG_BIG, DT_CENTER, LGLCD_BW_BMP_WIDTH);
m_lcd.SetOrigin(logo, 0, 50);
m_lcd.SetText(logo, _T("MusicBee"));
m_lcd.Update();
}
//Create home screen Logitech Monochrome LCD
else if(m_lcd.IsDeviceAvailable(LG_MONOCHROME))
{
m_lcd.ModifyDisplay(LG_MONOCHROME);
logo = m_lcd.AddText(LG_STATIC_TEXT, LG_BIG, DT_CENTER, LGLCD_BW_BMP_WIDTH);
m_lcd.SetOrigin(logo, 0, 5);
m_lcd.SetText(logo, _T("MusicBee"));
m_lcd.Update();
}
//Start thread
timerThread = thread(&Logitech::startThread);
return TRUE; // return TRUE unless you set the focus to a control
}
//Create playing screen for Logitech Monochrome LCD
VOID Logitech::createMonochrome()
{
m_lcd.RemovePage(0);
m_lcd.AddNewPage();
m_lcd.ShowPage(0);
if (logo != 0)
{
delete logo;
logo = 0;
}
artist = m_lcd.AddText(LG_SCROLLING_TEXT, LG_MEDIUM, DT_CENTER, LGLCD_BW_BMP_WIDTH);
m_lcd.SetOrigin(artist, 0, 0);
title = m_lcd.AddText(LG_SCROLLING_TEXT, LG_MEDIUM, DT_CENTER, LGLCD_BW_BMP_WIDTH);
m_lcd.SetOrigin(title, 0, 13);
progressbar = m_lcd.AddProgressBar(LG_FILLED);
m_lcd.SetProgressBarSize(progressbar, 136, 5);
m_lcd.SetOrigin(progressbar, 12, 38);
time = m_lcd.AddText(LG_STATIC_TEXT, LG_SMALL, DT_LEFT, 80);
m_lcd.SetOrigin(time, 12, 29);
time1 = m_lcd.AddText(LG_STATIC_TEXT, LG_SMALL, DT_LEFT, 80);
m_lcd.SetOrigin(time1, 125, 29);
/* playIcon = static_cast<HICON>(LoadImage(GetModuleHandle(NULL), MAKEINTRESOURCE(IDB_PNG2), IMAGE_BITMAP, 16, 16, LR_MONOCHROME));
playIconHandle = m_lcd.AddIcon(playIcon, 16, 16);
m_lcd.SetOrigin(playIconHandle, 2, 29);*/
firstTime = false;
changeArtistTitle(this->artistString, this->albumString, this->titleString, this->durationString, this->position);
}
//Create playing screen for Logitech Color LCD
VOID Logitech::createColor()
{
m_lcd.RemovePage(0);
m_lcd.AddNewPage();
m_lcd.ShowPage(0);
if (logo != 0)
{
delete logo;
logo = 0;
}
artist = m_lcd.AddText(LG_SCROLLING_TEXT, LG_MEDIUM, DT_CENTER, 320);
m_lcd.SetOrigin(artist, 5, 5);
album = m_lcd.AddText(LG_SCROLLING_TEXT, LG_MEDIUM, DT_CENTER, 320);
m_lcd.SetOrigin(album, 5, 30);
title = m_lcd.AddText(LG_SCROLLING_TEXT, LG_MEDIUM, DT_CENTER, 320);
m_lcd.SetOrigin(title, 5, 55);
time = m_lcd.AddText(LG_STATIC_TEXT, LG_SMALL, DT_LEFT, 80);
m_lcd.SetOrigin(time, 5, 80);
time1 = m_lcd.AddText(LG_STATIC_TEXT, LG_SMALL, DT_LEFT, 80);
m_lcd.SetOrigin(time1, 275, 80);
progressbar = m_lcd.AddProgressBar(LG_DOT_CURSOR);//320×240 pixel color screen
m_lcd.SetProgressBarSize(progressbar, 310, 15);
m_lcd.SetOrigin(progressbar, 5, 100);
time1 = m_lcd.AddText(LG_STATIC_TEXT, LG_SMALL, DT_LEFT, 80);
m_lcd.SetOrigin(time1, 275, 80);
/*playIcon = static_cast<HICON>(LoadImage(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_PNG1), IMAGE_ICON, 16, 16, LR_COLOR));
playIconHandle = m_lcd.AddIcon(playIcon, 16, 16);
m_lcd.SetOrigin(playIconHandle, 5, 29);*/
firstTime = false;
changeArtistTitle(this->artistString, this->albumString, this->titleString, this->durationString, this->position);
}
void Logitech::startThread()
{
while(!LogitechObject->stopthread)
{
this_thread::sleep_for(chrono::milliseconds(500));
if(!LogitechObject->stopthread && LogitechObject->progressbar != NULL)
{
//Update progressbar and position time on the screen after 1 second of music.
if(LogitechObject->state == StatePlay::Playing)
{
this_thread::sleep_for(chrono::milliseconds(500));
LogitechObject->position++;
LogitechObject->m_lcd.SetProgressBarPosition(LogitechObject->progressbar, static_cast<FLOAT>(((float)LogitechObject->position/LogitechObject->duration)*100));
LogitechObject->m_lcd.SetText(LogitechObject->time, LogitechObject->getPositionString().c_str());
}
//If music stopped then the progressbar and time must stop immediately
else if(LogitechObject->state == StatePlay::Stopped)
{
LogitechObject->position = 0;
LogitechObject->m_lcd.SetProgressBarPosition(LogitechObject->progressbar, 0);
LogitechObject->m_lcd.SetText(LogitechObject->time, LogitechObject->getPositionString().c_str());
}
LogitechObject->m_lcd.Update();
}
}
}
void Logitech::changeArtistTitle(wstring artistStr, wstring albumStr, wstring titleStr, wstring duration, int position)
{
this->artistString = artistStr;
this->albumString = albumStr;
this->titleString = titleStr;
this->durationString = duration;
this->position = position;
this->duration = getDuration(duration);
if(!firstTime)
{
if(m_lcd.IsDeviceAvailable(LG_COLOR))
{
m_lcd.SetText(album, albumStr.c_str());
}
m_lcd.SetText(artist, artistStr.c_str());
m_lcd.SetText(title, titleStr.c_str());
m_lcd.SetText(time, getPositionString().c_str());
string s(duration.begin(), duration.end());
if(s.size() < 5)
{
s = "0" + s;
}
wstring ws(s.begin(), s.end());
m_lcd.SetText(time1, ws.c_str());
ws.clear();
///*playIcon = static_cast<HICON>(LoadImage(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_PNG1), IMAGE_ICON, 16, 16, LR_COLOR));
//playIconHandle = m_lcd.AddIcon(playIcon, 16, 16);
//m_lcd.SetOrigin(playIconHandle, 5, 29);*/
m_lcd.Update();
artistStr.clear();
albumStr.clear();
titleStr.clear();
duration.clear();
}
}
//Set current playing position
void Logitech::setPosition(int pos)
{
this->position = pos/1000;
m_lcd.SetText(time, getPositionString().c_str());
m_lcd.Update();
}
//Change play state of the current playing song
void Logitech::changeState(StatePlay state)
{
this->state = state;
if(state == StatePlay::Playing && firstTime)
{
if(m_lcd.IsDeviceAvailable(LG_COLOR))
{
createColor();
}
else if(m_lcd.IsDeviceAvailable(LG_MONOCHROME))
{
createMonochrome();
}
}
}
//Gets the music duration
int Logitech::getDuration(wstring duration)
{
string s(duration.begin(), duration.end());
int position = s.find(":");
string minutes = s.substr(0, s.size() -position);
string seconds = s.substr(position);
int minutesInt = atoi(minutes.c_str());
int secondsInt = atoi(seconds.c_str());
return (minutesInt *60) + secondsInt;
}
//Change current position in string
wstring Logitech::getPositionString()
{
string minutes = to_string((int)position /60);
string seconds = to_string((int)position%60);
if(minutes.size() < 2)
{
minutes = "0" + minutes;
}
if(seconds.size() < 2)
{
seconds = "0" + seconds;
}
string time = minutes + ":" + seconds;
return wstring(time.begin(), time.end());
}
你发布的内容并不会给任何人太多的帮助。你说“一切正常，但两件简单的事情不起作用”，但不清楚它的作用是什么“一切”。你有什么可以在显示屏上打印吗？您的进度条是否第一次打印，但不是随后打印？如果您需要帮助，您需要更好地解释问题。 – phonetagger
更好地解释了我的问题（请参阅编辑的第一篇文章） –
你的代码中有几个地方像'if（object-> state == 7）'，但没有解释'7'是什么意思。添加一个描述英文有效状态的枚举，并使'object-> state'成为枚举类型。然后，或者将'object'重命名为有意义的东西，或者在注释中描述'object'是什么。相应地在您的文章中编辑代码，然后再看一下。而且，如果通过枚举名称不清楚，我很好奇Logitech :: startThread（）为什么'object-> state == 3'有额外的半秒睡眠，而'object-> state == 7'不。一般来说，添加评论。 – phonetagger