Subclassing and Hooking with Visual Basic

Name

CHOOSEFONT

Synopsis

Used to define the Font common dialog box when it is created:

Public Type CHOOSEFONT
        lStructSize As Long              
        hwndOwner As Long                 
        hdc As Long                       
        lpLogFont As Long                     
        iPointSize As Long                
        flags As Long                     
	    rgbColors As Long                 
        lCustData As Long                 
        lpfnHook As Long                   
        lpTemplateName As String            
        hInstance As Long                 
        lpszStyle As String                 
        nFontType As Integer                  
        MISSING_ALIGNMENT As Integer         
        nSizeMin As Long                   
        nSizeMax As Long                  
End Type

Structure Members

lStructSize

Size of this structure.

hwndOwner

Calling window’s handle.

hdc

Printer DC/IC.

lpLogFont

Pointer to the LOGFONT structure.

iPointSize

10 * size in points of selected font.

flags

Flags describing this common dialog box. You must set the CF_ENABLETEMPLATE and CF_ENABLEHOOK flags must be set to use a modified template and a dialog hook function.

rgbColors

Returned text color.

lCustData

Application-defined data passed in to the hook.

lpfnHook

A pointer to the developer-defined dialog hook function.

lpTemplateName

The ID of the modified dialog resource.

hInstance

The instance handle of the object that contains the dialog resource. This is usually set equal to the App.hInstance property.

lpszStyle

Style field here must be LF_FACESIZE or larger.

nFontType

Same value reported to the EnumFonts callback with the extra FONTTYPE bits added.

nSizeMin

Minimum point size allowed.

nSizeMax

Maximum point size allowed.