102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
// 10 february 2014
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package ui
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import (
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"fmt"
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// "syscall"
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"unsafe"
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)
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var (
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controlFont _HANDLE // really the font for messagebox text, but everyone and everything says to use it
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titleFont _HANDLE
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smallTitleFont _HANDLE
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menubarFont _HANDLE
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statusbarFont _HANDLE
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)
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type _LOGFONT struct {
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lfHeight int32
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lfWidth int32
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lfEscapement int32
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lfOrientation int32
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lfWeight int32
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lfItalic byte
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lfUnderline byte
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lfStrikeOut byte
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lfCharSet byte
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lfOutPrecision byte
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lfClipPrecision byte
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lfQuality byte
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lfPitchAndFamily byte
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lfFaceName [_LF_FACESIZE]uint16
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}
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type _NONCLIENTMETRICS struct {
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cbSize uint32
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iBorderWidth int32 // originally int
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iScrollWidth int32 // originally int
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iScrollHeight int32 // originally int
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iCaptionWidth int32 // originally int
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iCaptionHeight int32 // originally int
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lfCaptionFont _LOGFONT
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iSmCaptionWidth int32 // originally int
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iSmCaptionHeight int32 // originally int
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lfSmCaptionFont _LOGFONT
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iMenuWidth int32 // originally int
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iMenuHeight int32 // originally int
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lfMenuFont _LOGFONT
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lfStatusFont _LOGFONT
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lfMessageFont _LOGFONT
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}
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var (
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_systemParametersInfo = user32.NewProc("SystemParametersInfoW")
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_createFontIndirect = gdi32.NewProc("CreateFontIndirectW")
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)
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func getStandardWindowFonts() (err error) {
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var ncm _NONCLIENTMETRICS
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ncm.cbSize = uint32(unsafe.Sizeof(ncm))
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r1, _, err := _systemParametersInfo.Call(
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uintptr(_SPI_GETNONCLIENTMETRICS),
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uintptr(unsafe.Sizeof(ncm)),
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uintptr(unsafe.Pointer(&ncm)),
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0)
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if r1 == 0 { // failure
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return fmt.Errorf("error getting system parameters: %v", err)
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}
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getfont := func(which *_LOGFONT, what string) (_HANDLE, error) {
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r1, _, err = _createFontIndirect.Call(uintptr(unsafe.Pointer(which)))
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if r1 == 0 { // failure
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return _NULL, fmt.Errorf("error getting %s font; Windows last error: %v", what, err)
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}
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return _HANDLE(r1), nil
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}
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controlFont, err = getfont(&ncm.lfMessageFont, "control")
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if err != nil {
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return err
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}
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titleFont, err = getfont(&ncm.lfCaptionFont, "titlebar")
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if err != nil {
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return err
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}
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smallTitleFont, err = getfont(&ncm.lfSmCaptionFont, "small titlebar")
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if err != nil {
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return err
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}
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menubarFont, err = getfont(&ncm.lfMenuFont, "menubar")
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if err != nil {
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return err
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}
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statusbarFont, err = getfont(&ncm.lfStatusFont, "statusbar")
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if err != nil {
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return err
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}
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return nil // all good
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}
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