READ THE CODE

Inside Bitcoin

The code behind the network, with room to understand it.

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1This directory contains the source code for the Bitcoin Core graphical user interface (GUI). It uses the [Qt](https://www1.qt.io/developers/) cross-platform framework.
2
3The current precise version for Qt is specified in [qt_details.mk](/depends/packages/qt_details.mk).
4
5## Compile and run
6
7See build instructions: [Unix](/doc/build-unix.md), [macOS](/doc/build-osx.md), [Windows](/doc/build-windows-msvc.md), [FreeBSD](/doc/build-freebsd.md), [NetBSD](/doc/build-netbsd.md), [OpenBSD](/doc/build-openbsd.md)
8
9When following your systems build instructions, make sure to install the `Qt` dependencies.
10
11To run:
12
13```sh
14./build/bin/bitcoin-qt
15```
16
17## Files and Directories
18
19#### forms/
20
21- A directory that contains [Designer UI](https://doc.qt.io/qt-5.9/designer-using-a-ui-file.html) files. These files specify the characteristics of form elements in XML. Qt UI files can be edited with [Qt Creator](#using-qt-creator-as-ide) or using any text editor.
22
23#### locale/
24
25- Contains translations. They are periodically updated and an effort is made to support as many languages as possible. The process of contributing translations is described in [doc/translation_process.md](/doc/translation_process.md).
26
27#### res/
28
29 - Contains graphical resources used to enhance the UI experience.
30
31#### test/
32
33- Functional tests used to ensure proper functionality of the GUI. Significant changes to the GUI code normally require new or updated tests.
34
35#### bitcoingui.(h/cpp)
36
37- Represents the main window of the Bitcoin UI.
38
39#### \*model.(h/cpp)
40
41- The model. When it has a corresponding controller, it generally inherits from  [QAbstractTableModel](https://doc.qt.io/qt-5/qabstracttablemodel.html). Models that are used by controllers as helpers inherit from other Qt classes like [QValidator](https://doc.qt.io/qt-5/qvalidator.html).
42- ClientModel is used by the main application `bitcoingui` and several models like `peertablemodel`.
43
44#### \*page.(h/cpp)
45
46- A controller. `:NAMEpage.cpp` generally includes `:NAMEmodel.h` and `forms/:NAME.page.ui` with a similar `:NAME`.
47
48#### \*dialog.(h/cpp)
49
50- Various dialogs, e.g. to open a URL. Inherit from [QDialog](https://doc.qt.io/qt-5/qdialog.html).
51
52#### paymentserver.(h/cpp)
53
54- (Deprecated) Used to process BIP21 payment URI requests. Also handles URI-based application switching (e.g. when following a bitcoin:... link from a browser).
55
56#### walletview.(h/cpp)
57
58- Represents the view to a single wallet.
59
60#### Other .h/cpp files
61
62* UI elements like BitcoinAmountField, which inherit from QWidget.
63* `bitcoinstrings.cpp`: automatically generated
64* `bitcoinunits.(h/cpp)`: BTC / mBTC / etc. handling
65* `callback.h`
66* `guiconstants.h`: UI colors, app name, etc.
67* `guiutil.h`: several helper functions
68* `macdockiconhandler.(h/mm)`: macOS dock icon handler
69* `macnotificationhandler.(h/mm)`: display notifications in macOS
70
71## Contribute
72
73See [CONTRIBUTING.md](/CONTRIBUTING.md) for general guidelines.
74
75**Note:** Do not change `local/bitcoin_en.ts`. It is updated [automatically](/doc/translation_process.md#writing-code-with-translations).
76
77## Using Qt Creator as an IDE
78
79[Qt Creator](https://www.qt.io/product/development-tools) is a powerful tool which packages a UI designer tool (Qt Designer) and a C++ IDE into one application. This is especially useful if you want to change the UI layout.
80
81#### Download Qt Creator
82
83On Unix and macOS, Qt Creator can be installed through your package manager. Alternatively, you can download a binary from the [Qt Website](https://www.qt.io/download/).
84
85**Note:** If installing from a binary grabbed from the Qt Website: During the installation process, uncheck everything except for `Qt Creator`.
86
87##### macOS
88
89```sh
90brew install qt-creator
91```
92
93##### Ubuntu & Debian
94
95```sh
96sudo apt-get install qtcreator
97```
98
99#### Setup Qt Creator
100
1011. Make sure you've installed all dependencies specified in your systems build instructions
1022. Follow the compile instructions for your system, adding the `-DCMAKE_BUILD_TYPE=Debug` build flag
1033. Start Qt Creator. At the start page, do: `New` -> `Import Project` -> `Import Existing Project`
1044. Enter `bitcoin-qt` as the Project Name and enter the absolute path to `src/qt` as Location
1055. Check over the file selection, you may need to select the `forms` directory (necessary if you intend to edit *.ui files)
1066. Confirm the `Summary` page
1077. In the `Projects` tab, select `Manage Kits...`
108
109 **macOS**
110 - Under `Kits`: select the default "Desktop" kit
111 - Under `Compilers`: select `"Clang (x86 64bit in /usr/bin)"`
112 - Under `Debuggers`: select `"LLDB"` as debugger (you might need to set the path to your LLDB installation)
113
114 **Ubuntu & Debian**
115
116 Note: Some of these options may already be set
117
118 - Under `Kits`: select the default "Desktop" kit
119 - Under `Compilers`: select `"GCC (x86 64bit in /usr/bin)"`
120 - Under `Debuggers`: select `"GDB"` as debugger
121
1228. While in the `Projects` tab, ensure that you have the `bitcoin-qt` executable specified under `Run`
123 - If the executable is not specified: click `"Choose..."`, navigate to `build/bin`, and select `bitcoin-qt`
1249. You're all set! Start developing, building, and debugging the Bitcoin Core GUI
125

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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Bitcoin Core source © its contributors, distributed under the MIT license. Original notices and bundled third-party licenses are retained in the source tree.