emWin - SEGGER Microcontroller

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14.4 Multitask system: multiple tasks calling emWin ..........................................316
14.4.1 Description............................................................................................316
14.4.2 Advantages ...........................................................................................316
14.4.3 Disadvantages .......................................................................................316
14.4.4 Using emWin .........................................................................................316
14.4.5 Recommendations..................................................................................316
14.4.6 Example ...............................................................................................316
14.5 Configuration functions for multitasking support .........................................317
14.6 Configuration macros for multitasking support ...........................................319
14.7 Kernel interface API................................................................................320
14.7.1 Examples ..............................................................................................323
15 The Window Manager (WM) ......................................................................................325
15.1 Description of terms ...............................................................................326
15.2 Callback mechanism, invalidation and rendering .........................................327
15.2.1 Rendering without callbacks.....................................................................327
15.2.2 Rendering using callbacks .......................................................................328
15.2.3 Overwriting callback functions..................................................................328
15.2.4 Background window redrawing and callback...............................................329
15.2.5 Invalidation ...........................................................................................330
15.2.6 Rendering of transparent windows............................................................330
15.2.7 Automatic use of memory devices ............................................................330
15.2.8 Automatic use of multiple frame buffers ....................................................330
15.2.9 Automatic use of display driver cache .......................................................331
15.3 Motion support.......................................................................................331
15.3.1 Enabling motion support of the WM ..........................................................331
15.3.2 Basic motion support for a window ...........................................................331
15.3.2.1 Using creation flags ................................................................................331
15.3.2.2 Using API function..................................................................................331
15.3.3 Advanced motion support........................................................................331
15.3.3.1 WM_MOTION message and WM_MOTION_INFO..........................................332
15.4 ToolTips ................................................................................................332
15.4.1 How they work.......................................................................................333
15.4.2 Creating ToolTips ...................................................................................333
15.4.2.1 Creating ToolTips for dialog items.............................................................333
15.4.2.2 Creating ToolTips for simple windows........................................................333
15.5 Messages ..............................................................................................334
15.5.1 Message structure ..................................................................................334
15.5.2 List of messages ....................................................................................335
15.5.3 System-defined messages .......................................................................336
15.5.4 Pointer input device (PID) messages.........................................................340
15.5.5 System-defined notification codes ............................................................343
15.5.6 Application-defined messages ..................................................................343
15.6 Configuration options..............................................................................344
15.7 WM API.................................................................................................345
15.7.1 Using the WM API functions .....................................................................347
15.8 WM API: Basic functions..........................................................................348
15.9 WM API: Motion support..........................................................................378
15.10 WM API: ToolTip related functions ............................................................382
15.11 WM API: Memory device support (optional) ...............................................385
15.12 WM API: Timer related functions ..............................................................386
15.13 WM API: Widget related functions.............................................................388
15.14 Example ...............................................................................................392
16 Window Objects (Widgets).........................................................................................395
16.1 Some basics ..........................................................................................396
16.1.1 Available widgets ...................................................................................396
16.1.2 Understanding the redrawing mechanism ..................................................397
16.1.3 How to use widgets ................................................................................397
16.2 Configuration options..............................................................................399
UM03001 User & Reference Guide for emWin V5.18 © 1997 - 2012 SEGGER Microcontroller GmbH & Co. KG