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Common Data Types used in Palm OS Programming Reference: Ch.8—PDA Programming in C Book

Common Data Types used in Palm OS Programming Reference: Ch.8—PDA Programming in C Book. Common Data Types. MemHandle Int8 Int16 Int32 Boolean UInt8 UInt16 UInt32. Common Data Types (cont.). FormType FieldType ControlType Err EventType Enum. Common Data Types. Reference

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Common Data Types used in Palm OS Programming Reference: Ch.8—PDA Programming in C Book

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  1. Common Data Types used in Palm OS Programming Reference: Ch.8—PDA Programming in C Book

  2. Common Data Types • MemHandle • Int8 • Int16 • Int32 • Boolean • UInt8 • UInt16 • UInt32

  3. Common Data Types (cont.) • FormType • FieldType • ControlType • Err • EventType • Enum

  4. Common Data Types • Reference • http://www.palmos.com/dev/support/docs/palmos/PalmOSReference/ReferenceTOC.html • PalmTypes.h

  5. Explanation forCommon Data Types • Int8 • signed 8-bit value • typedefsignedchar Int8; • Int16 • signed 16-bit value • typedefsignedshort Int16

  6. Explanation forCommon Data Types • Int32 • signed 32-bit value • typedefsignedlong Int32 • Boolean • true / false • typedefunsignedchar Boolean;

  7. Explanation forCommon Data Types • UInt8 • unsigned 8-bit value • typedefunsignedcharUInt8; • UInt16 • unsigned 16-bit value • typedefunsignedshort UInt16;

  8. Explanation forCommon Data Types • UInt32 • unsigned 32-bit value • typedefunsignedlong UInt32; • MemHandle • a handle to a memory chunk • typedefstruct _opaque *MemHandle;

  9. Explanation forCommon Data Types • FormType typedef struct { WindowType window; UInt16 formId; FormAttrType attr; WinHandle bitsBehindForm; FormEventHandlerType *handler; UInt16 focus; UInt16 defaultButton; UInt16 helpRscId; UInt16 menuRscId; UInt16 numObjects; FormObjListType *objects; } FormType;

  10. Explanation forCommon Data Types • FieldType • represents a field

  11. FieldType typedef struct { UInt16 id; RectangleType rect; FieldAttrType attr; Char *text; MemHandle textHandle; LineInfoPtr lines; UInt16 textLen; UInt16 textBlockSize; UInt16 maxChars; UInt16 selFirstPos; UInt16 selLastPos; UInt16 insPtXPos; UInt16 insPtYPos; FontID fontID; UInt8 reserved; } FieldType;

  12. Explanation forCommon Data Types • Control Resources • Button—Button Resource (tBTN) • Popup trigger— Popup Trigger Resource (tPUT) • Selector trigger—Selector Trigger Resource (tSLT) • Repeat control—Repeating Button Resource (tREP) • Push button—Push Button Resource (tPBN) • Check box—Check Box Resource (tCBX) • Slider— Slider Resource (tsld) • Feedback slider— Feedback Slider Resource (tslf)

  13. Explanation forCommon Data Types • ControlType typedef struct { UInt16 id; RectangleType bounds; Char *text; ControlAttrType attr; ControlStyleType style; FontID font; UInt8 group; UInt8 reserved; } ControlType;

  14. Explanation forCommon Data Types • ControlType typedef struct { UInt16 id; RectangleType bounds; Char *text; ControlAttrType attr; ControlStyleType style; FontID font; UInt8 group; UInt8 reserved; } ControlType;

  15. Explanation forCommon Data Types • EventType typedef struct { eventsEnum eType; Boolean penDown; UInt8 tapCount; Int16 screenX; Int16 screenY; union{ ... } data; } EventType;

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