I rewrite application from Qt 4.8 to 5.0.1 and I have big trouble. In Qt 5.0.1 version there is no GetDC() function (with no argument). GetDC(hwnd) exist but I have no hwnd. What should I do? Please help. On google there is no information about it.
Related
I'm trying to get objc4-532.2 to work on Mavericks.
(First of all, I tried to compile the latest version of objc4 (objc4-551.1).
This fails due os/lock_private.h is missing (objc-os.h). Maybe anyone knows how to solve this issue?)
Back to topic:
To successfully build objc4-532.2 I need to link against the frameworks which are based
on OS X 10.8.
So I configured the Xcode project to use OS X 10.8 SDKs for Base SDK and OS X Deployment Target.
This works, and I can compile and link a simple console based C program (Xcode template).
However when I try to link this program against Foundation and debug it, it miserably fails with the following error:
dyld: Symbol not found: _objc_debug_taggedpointer_mask Referenced from:
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
Expected in:
/Users/manu/Library/Developer/Xcode/DerivedData/objc-dtrsexfveobodwdnwlpknyyiekpe/Build/Products/Debug/libobjc.A.dylib
in
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
The symbol _objc_debug_taggedpointer_mask was first introduced in objc4-551.1 (latest runtime) and all 10.9 Frameworks needs to access this symbol (at least in debug mode).
Example:
$ cd /System/Library/Frameworks/Foundation.framework/Versions/C
$ grep objc_debug_taggedpointer_mask Foundation
Binary file Foundation matches
A Framework based on 10.8 doesn't contain such a symbol.
Since my project is configured to use 10.8 SDKs this error should not occur?!
So, what's the missing point?
Thanks!
I solved this problem: the symbol of objc_debug_taggedpointer_mask was imported into runtime after mac os x 10.9, so you need to add the new tags into the 532.2's code to make it compatible with os x 10.9's foundation and other frameworks.
Here is my working directory:
https://github.com/Jeswang/objc4-532.2
(First of all, I tried to compile the latest version of objc4
(objc4-551.1). This fails due os/lock_private.h is missing
(objc-os.h). Maybe anyone knows how to solve this issue?)
The best solution I could find is to manually scrape together the header files as described here:
http://www.mulle-kybernetik.com/weblog/2011/how_to_build_libobjc_for_os_x.html
The closest thing to os/lock_private.h that I have found is private/tsd_private.h from the libpthread project:
https://opensource.apple.com/source/libpthread/libpthread-105.40.1/private/tsd_private.h
Edit
I have also found this:
https://github.com/samdmarshall/OSXPrivateSDK
Yes the title is correct...we are going BACK to qt4. We recently built a decent size app with Qt5. We now been told that the app must support RH 6 and RH 5 distros.
Since RH6 ships with Qt 4.6.2 and Rh 5 ships with Qt 3.3.6, I'm concerned about having to make lots of modifications to port back to older versions of Qt.
Can the latest versionf of Qt 4.x and 3.x understand new syntax of Qt5 (eg: connect is slightly different)? If not, can someone suggest how best to undertake this? Are we looking at ifdef'ing our way out of this? (and if so, is there an easy reference for how to do this)
Consider building qt5 libraries and deploying them (only ones you actually use) together with your project. This link can help to build.
I actually built them today on my CentOS 6.5 64-bit with this configuration command:
./configure -prefix /opt/my_prod/Qt-5.2.1 -release -nomake examples -dbus -qt-xcb -no-c++11
However I did not built all libs listed on the link and did not apply patches.
Then I built a small test app and ran it on CentOS and then on Ubuntu 12.04 (to which Qt5 libs I copied manually).
am developing one dictionary for mac os 10.6. Am not able to locate glib.h. can i get this as a library or framework. am confused very much. please give me your valuable solution.
Note: i want to use GSList from glib
Install it using MacPorts or download the source code and install manually. Or if you're developing a cocoa aplication I'm sure the framework has it's own list structures, it would be better to use the native ones.
The new QtCreator 2.0.1 has new remote-compilation facilities that allow building of Symbian Qt apps on Mac and Linux hosts.
Unfortunately, the phonegap code drop for Symbian/Qt doesn't remote-compile.
Any ideas?
Connection works to the remote compiler.
Here is a screen grab of the build errors I get with
Qt Creator 2.0.1
OSX 10.6.7
Qt 4.6.3 with Mobilitu 1.0.2 - S60 5th edition release
(but got the same errors with 1.1.2experimental...)
PhoneGap Qt cloned today from Git
Having this same issue with QtCreator and the Remote Compiler, but not using Phone Gap. I think this is more a Mac OS X thing. Is the missing directory within a
symbian {
...
}
scope in your .pro file? Easiest 'fix' is to pull it out of that scope block, unless you are cross compiling to other platforms and need separate source directories.
am using Os X 10.6.4 and X code Version 3.2.3 for developing some simple app files and using PackageMaker to distribute these app files. But when trying to run the package on some other mac I am getting error that the package is not compatible with the Os X its running and file would not be installed. Is this a problem with X code or package maker. sorry for reposting it but although I tried changing base SDK to 10.5, it was getting compiled and ran well on mac I am using for development (Mac OS X 10.6.4) but when installed on mac running OS X 10.5 the .app files were grayed out and message poped up saying 'you cannot use this version of application with this version of Mac'. Any idea why is this happening? Also as mentioned earlier I am using IBOutlet for accepting user date from form and then writing that into a text file. Any idea or solution about it?
Do you have anything set in your Info.plist for the LSMinimumSystemVersion key? This is one place the system looks.
When I was brand new I had trouble figuring this out...
Make sure that your Base SDK and deployment target are 10.5 and that you have the right compiler on(GCG4.0/4.2), also make sure that when you change these settings you change it for both Release and Debug, I once made this mistake of changing it only on debug, and when I built for release it only worked on 10.6 because I didn't change those settings.