DrawControls

DrawControls Draw all controls visible in a window

#include <Controls.h> Control Manager

void DrawControls(theWindow );

WindowPtr theWindow ; window to update

DrawControls draws all of a window's currently active and visible controls.

This (or UpdtControl) should be used upon detecting an update event for a

window that contains controls.

theWindow is a pointer to a 108-byte GrafPort structure (actually a 156-byte

WindowRecord). It is typically a value obtained from

EventRecord. message after calling WaitNextEvent.

Notes: This can be used at any time to draw the controls in a window. It works by

drawing all the controls, and letting the off-screen or covered controls be

clipped. The 128K ROM UpdtControl function is more efficient since it

doesn't waste time drawing outside of the window's visible region.

The most common usage is to call DrawControls to redraw scroll bars

upon detecting an update event as in this code skeleton:

if ( GetNextEvent( everyEvent, &myEvent ) ) {

switch ( myEvent.what ) {

updtWin = (WindowPtr)myEvent. message;

GetPort( &savePort );

SetPort( updtWin)

BeginUpdate( updtWin );

DrawGrowIcon( updtWin); /* if needed */

MyDrawWin( updtWin); /* draw window contents */

EndUpdate( updtWin );

SetPort( savePort )

break;

case mouseDown:

. ... etc ...

}

The ’size icon' (if used) is also part of the content region of a window and

will need to be redrawn when it is uncovered.