QImage problem in Windows-2000

[sabeesh]

Hi,
I have a program in Qt 4.3.0 and in that program I need to load some picture. For that I write a function like this

MyClass::LoadImages(){
 
	int COLUMN;
	QImage *image = new QImage();
	QIcon icon; 
 
	filters << "snapshot-*" ;
 
        directory.setNameFilters(filters);
        files = directory.entryList(filters, QDir::Files | QDir::NoSymLinks);
		c=0; COLUMN = 2;
		QLabel *pixmapLabels [100] [2];
 
        NumStates_New = 0;
        NumStates_New = files.size()/2;
 
		if ( files.size()%2 >0 ) {
			NumStates_New++;
		}
 
          for (int i = 0; i < NumStates_New; ++i) {
                for (int j = 0; j < COLUMN; ++j) {
                    pixmapLabels[i][j] = createPixmapLabel();
					pixmapLabels[i][j]->resize(5,5);
				//	pixmapLabels[i][j]->show();
                                     SnapLayout->addWidget(pixmapLabels[i][j], i + 1, j + 1 );
				//	SnapLayout->update();
 
                }
            }
		r=0, c=0;
        for (int i = 0; i < files.size(); ++i) {
				fileName = directory.absolutePath();
				fileName.append("/");
				fileName.append(files.at(i).toLocal8Bit().constData()); 
 
				 image->load(fileName);
 
	  if (!image->isNull()){ 
	              icon.addPixmap(QPixmap::fromImage(*image), QIcon::Normal, QIcon::On);
			}
				 else{
				QMessageBox::critical(this, "Picture error", "Picture error", QMessageBox::Ok, QMessageBox::NoButton);
				}
 
                this->icon = icon;
                this->size = QSize(110,102);
                QPixmap pixmap = icon.pixmap(size, QIcon::Normal, QIcon::On);
       		 pixmapLabels[r][c]->setPixmap(pixmap);
		  pixmapLabels[r][c]->setToolTip(fileName);
		  pixmapLabels[r][c]->show();
 
                c++; if (c>=COLUMN) { c=0; r++; }
        }
}
 
 
 
QLabel *MyClass::createPixmapLabel()
{
    QLabel *label = new QLabel;
    label->setEnabled(true);
    label->setAlignment(Qt::AlignCenter);
    label->setText("Picture");
    label->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    label->setAutoFillBackground(true);
    label->setMinimumSize(110,102);
    return label;
}

MyClass::LoadImages(){

	int COLUMN;
	QImage *image = new QImage();
	QIcon icon; 

	filters << "snapshot-*" ;

        directory.setNameFilters(filters);
        files = directory.entryList(filters, QDir::Files | QDir::NoSymLinks);
		c=0; COLUMN = 2;
		QLabel *pixmapLabels [100] [2];

        NumStates_New = 0;
        NumStates_New = files.size()/2;

		if ( files.size()%2 >0 ) {
			NumStates_New++;
		}

          for (int i = 0; i < NumStates_New; ++i) {
                for (int j = 0; j < COLUMN; ++j) {
                    pixmapLabels[i][j] = createPixmapLabel();
					pixmapLabels[i][j]->resize(5,5);
				//	pixmapLabels[i][j]->show();
                                     SnapLayout->addWidget(pixmapLabels[i][j], i + 1, j + 1 );
				//	SnapLayout->update();

                }
            }
		r=0, c=0;
        for (int i = 0; i < files.size(); ++i) {
				fileName = directory.absolutePath();
				fileName.append("/");
				fileName.append(files.at(i).toLocal8Bit().constData()); 

				 image->load(fileName);

	  if (!image->isNull()){ 
	              icon.addPixmap(QPixmap::fromImage(*image), QIcon::Normal, QIcon::On);
			}
				 else{
				QMessageBox::critical(this, "Picture error", "Picture error", QMessageBox::Ok, QMessageBox::NoButton);
				}
 
                this->icon = icon;
                this->size = QSize(110,102);
                QPixmap pixmap = icon.pixmap(size, QIcon::Normal, QIcon::On);
       		 pixmapLabels[r][c]->setPixmap(pixmap);
		  pixmapLabels[r][c]->setToolTip(fileName);
		  pixmapLabels[r][c]->show();

                c++; if (c>=COLUMN) { c=0; r++; }
        }
}



QLabel *MyClass::createPixmapLabel()
{
    QLabel *label = new QLabel;
    label->setEnabled(true);
    label->setAlignment(Qt::AlignCenter);
    label->setText("Picture");
    label->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    label->setAutoFillBackground(true);
    label->setMinimumSize(110,102);
    return label;
}

To copy to clipboard, switch view to plain text mode 

I compiled this code in Windows Xp and it is working. But When I copy the .exe file to Windows-2000, then it display the error message "Picture error", ie, the image is NULL.
I tried this same code in Linux ( fedora core 2 ) and it is working.

How can I solve this problem in windows-2000.
Please help me

[jpn]

See FAQ: Why no images are displayed when I deploy my application on another machine that doesn't have Qt installed even though they are displayed on my computer?

[sabeesh]

Hi,
I am using VS-2005 for compile my program. Can I include that plug-in ( .lib files ) in my .exe program for avoid the folder copy ( imageformats ) ?

[jpn]

Static Plugins

[sabeesh]

Hi,
I tryed this, But when I compile the program, Qt display an error like this

main.obj : error LNK2019: unresolved external symbol "class QObject * __cdecl qt_plugin_instance_qjpeg(void)" (?qt_plugin_instance_qjpeg@@YAPAVQObject@@XZ) referenced in function "public: __thiscall StaticqjpegPluginInstance::StaticqjpegPluginInstan ce(void)" (??0StaticqjpegPluginInstance@@QAE@XZ)
release\Test.exe : fatal error LNK1120: 1 unresolved externals

Please help me to solve this problem.

[jpn]

Did you notice what it says right in the beginning when you follow the link:

When compiled as a static library, Qt provides the following static plugins

?