diff options
Diffstat (limited to 'prevlib/comctl_windows.go')
| -rw-r--r-- | prevlib/comctl_windows.go | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/prevlib/comctl_windows.go b/prevlib/comctl_windows.go deleted file mode 100644 index 56a7bfb..0000000 --- a/prevlib/comctl_windows.go +++ /dev/null @@ -1,126 +0,0 @@ -// 25 february 2014 - -package ui - -import ( - "fmt" - "io/ioutil" - "syscall" - "unsafe" -) - -// pretty much every constant here except _WM_USER is from commctrl.h, except where noted - -var ( - comctlManifestCookie uintptr -) - -var ( - _activateActCtx = kernel32.NewProc("ActivateActCtx") - _createActCtx = kernel32.NewProc("CreateActCtxW") -) - -/* -Windows requires a manifest file to enable Common Controls version 6. -The only way to not require an external manifest is to synthesize the manifest ourselves. -We can use the activation context API to load it at runtime. -References: -- http://stackoverflow.com/questions/4308503/how-to-enable-visual-styles-without-a-manifest -- http://support.microsoft.com/kb/830033 -*/ -func forceCommonControls6() (err error) { - manifestfile, err := ioutil.TempFile("", "gouicomctl32v6manifest") - if err != nil { - return fmt.Errorf("error creating synthesized manifest file: %v", err) - } - _, err = manifestfile.Write(manifest) - if err != nil { - return fmt.Errorf("error writing synthesized manifest file: %v", err) - } - filename := manifestfile.Name() - // we now have to close the file, otherwise ActivateActCtx() will complain that it's in use by another program - // if ioutil.TempFile() ever changes so that the file is deleted when it is closed, this will need to change - manifestfile.Close() - - var actctx struct { - cbSize uint32 - dwFlags uint32 - lpSource *uint16 - wProcessorArchitecture uint16 - wLangId uint16 // originally LANGID - lpAssemblyDirectory uintptr // originally LPCWSTR - lpResourceName uintptr // originally LPCWSTR - lpApplicationName uintptr // originally LPCWSTR - hModule _HANDLE // originally HMODULE - } - - actctx.cbSize = uint32(unsafe.Sizeof(actctx)) - // make this context the process default, just to be safe - actctx.dwFlags = _ACTCTX_FLAG_SET_PROCESS_DEFAULT - actctx.lpSource = toUTF16(filename) - - r1, _, err := _createActCtx.Call(uintptr(unsafe.Pointer(&actctx))) - // don't negConst() INVALID_HANDLE_VALUE; windowsconstgen was given a pointer by windows.h, and pointers are unsigned, so converting it back to signed doesn't work - if r1 == _INVALID_HANDLE_VALUE { // failure - return fmt.Errorf("error creating activation context for synthesized manifest file: %v", err) - } - r1, _, err = _activateActCtx.Call( - r1, - uintptr(unsafe.Pointer(&comctlManifestCookie))) - if r1 == uintptr(_FALSE) { // failure - return fmt.Errorf("error activating activation context for synthesized manifest file: %v", err) - } - return nil -} - -func initCommonControls() (err error) { - var icc struct { - dwSize uint32 - dwICC uint32 - } - - err = forceCommonControls6() - if err != nil { - return fmt.Errorf("error forcing Common Controls version 6 (or newer): %v", err) - } - - icc.dwSize = uint32(unsafe.Sizeof(icc)) - icc.dwICC = _ICC_PROGRESS_CLASS - - comctl32 = syscall.NewLazyDLL("comctl32.dll") - r1, _, err := comctl32.NewProc("InitCommonControlsEx").Call(uintptr(unsafe.Pointer(&icc))) - if r1 == _FALSE { // failure - return fmt.Errorf("error initializing Common Controls (comctl32.dll); Windows last error: %v", err) - } - return nil -} - -// Common Controls class names. -const ( - // x (lowercase) prefix to avoid being caught by the constants generator - x_PROGRESS_CLASS = "msctls_progress32" -) - -var manifest = []byte(`<?xml version="1.0" encoding="UTF-8" standalone="yes"?> -<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"> -<assemblyIdentity - version="1.0.0.0" - processorArchitecture="*" - name="CompanyName.ProductName.YourApplication" - type="win32" -/> -<description>Your application description here.</description> -<dependency> - <dependentAssembly> - <assemblyIdentity - type="win32" - name="Microsoft.Windows.Common-Controls" - version="6.0.0.0" - processorArchitecture="*" - publicKeyToken="6595b64144ccf1df" - language="*" - /> - </dependentAssembly> -</dependency> -</assembly> -`) |