MoreForm.h File Reference
Functions for forms. More...
#include "MorePrefix.h"
#include "MoreTypes.h"
#include <Form.h>
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Go to the source code of this file.
Defines | |
#define | MFrmSetFocusByIdx(formP, idx) FrmSetFocus( formP, idx ) |
Functions | |
void | MFrmHandleAppOpenFormEvt (ResourceID_t formID, FormEventHandlerType *handler) |
Call in response to a form open event to do initial setup of the form, such as loading it into memory and setting its event callback. | |
FrmObjectID_t | MFrmHandleModalForm (ResourceID_t formID, FormEventHandlerType *handler) |
Call to display a modal dialog and wait for a response. | |
FrmObject_t * | MFrmGetObjPtrByID (const FormType *formP, FrmObjectID_t id) |
Returns the pointer of an object specified by id. | |
FrmObject_t * | MFrmGetObjPtrByIdx (const FormType *formP, FrmObjectIdx_t idx) |
Returns the pointer of an object specified by index. | |
FormObjectKind | MFrmGetObjTypeByID (const FormType *formP, FrmObjectID_t id) |
Returns the kind of a form object specified by id. | |
FormObjectKind | MFrmGetObjTypeByIdx (const FormType *formP, FrmObjectIdx_t idx) |
Returns the kind of a form object specified by index. | |
FormObjectKind | MFrmGetObjTypeByPtr (const FormType *formP, FrmObject_t *objectP) |
Returns the kind of a form object specified by pointer. | |
FrmObject_t * | MFrmGetObjPtrOfTypeByID (const FormType *formP, FrmObjectID_t id, FormObjectKind kind) |
Returns the kind of a form object specified by id if it is of the specified kind. | |
FrmObject_t * | MFrmGetObjPtrOfTypeByIdx (const FormType *formP, FrmObjectIdx_t idx, FormObjectKind kind) |
Returns the kind of a form object specified by index if it is of the specified kind. | |
FrmObject_t * | MFrmGetObjPtrOfTypeByPtr (const FormType *formP, FrmObject_t *ptr, FormObjectKind kind) |
Returns the kind of a form object specified by pointer if it is of the specified kind. | |
void | MFrmSetObjVisibleByID (FormType *formP, FrmObjectID_t id, Boolean visible) |
Hides an object by form and object id. | |
void | MFrmSetObjVisibleByIdx (FormType *formP, FrmObjectIdx_t idx, Boolean visible) |
Hides an object by form and object index. | |
void | MFrmSetObjVisibleByPtr (FormType *formP, FrmObject_t *objectP, Boolean visible) |
Hides an object by form and object pointer. | |
void | MFrmReload () |
Forces the current form to reload. | |
void | MFrmSetFocusByID (FormType *formP, FrmObjectID_t objectId) |
Sets focus to a field based on object id. | |
void | MFrmSetFocusByPtr (FormType *formP, FrmObject_t *objectP) |
Sets focus to a field based on object pointer. | |
void | MFrmNudgeObjXYByID (FormType *formP, FrmObjectID_t id, Coord deltaX, Coord deltaY, Boolean redraw) |
Relative reposition of form object by id. | |
void | MFrmNudgeObjXYByIdx (FormType *formP, FrmObjectIdx_t idx, Coord deltaX, Coord deltaY, Boolean redraw) |
Relative reposition of form object by index. | |
void | MFrmNudgeObjXYByPtr (FormType *formP, FrmObject_t *objectP, Coord deltaX, Coord deltaY, Boolean redraw) |
Relative reposition of form object by pointer. |
Detailed Description
Functions for forms.MoreForm provides functions for working with Palm OS forms in ways that the Palm OS SDK does not directly support. For instance, it includes a function for retrieving a form object by id, instead of by index, and for moving an object by a specified distance instead of to specific coordinates.
Definition in file MoreForm.h.
Define Documentation
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Definition at line 191 of file MoreForm.h. |
Function Documentation
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Returns the pointer of an object specified by id. Virtually every Palm OS application has some version of this function. Applications tend to reference form objects by ID, but many Palm OS calls require object pointers. Notes:
Definition at line 53 of file MoreForm.c. 00054 { 00055 _validate_const_form_ptr( formP ); 00056 return FrmGetObjectPtr( formP, _validate_object_idx( formP, 00057 FrmGetObjectIndex( formP, id ) ) ); 00058 }
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Returns the pointer of an object specified by index. Given a form pointer and a object index, returns the pointer corresponding to that object. Notes:
Definition at line 60 of file MoreForm.c. 00061 { 00062 _validate_const_form_ptr( formP ); 00063 return FrmGetObjectPtr( formP, idx ); 00064 }
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Returns the kind of a form object specified by id if it is of the specified kind. If the object exists but is of the wrong kind, NULL is returned. Definition at line 68 of file MoreForm.c. 00070 { 00071 FrmObjectIdx_t idx = FrmGetObjectIndex( formP, _validate_object_id( formP, id ) ); 00072 _validate_object_idx( formP, idx ); 00073 if ( ( idx != frmInvalidObjectId ) && ( FrmGetObjectType( formP, idx ) == kind ) ) 00074 return FrmGetObjectPtr( formP, idx ); 00075 else 00076 return NULL; 00077 }
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Returns the kind of a form object specified by index if it is of the specified kind. If the object exists but is of the wrong kind, NULL is returned. Definition at line 79 of file MoreForm.c. 00081 { 00082 _validate_object_idx( formP, idx ); 00083 if ( ( idx != frmInvalidObjectId ) && ( FrmGetObjectType( formP, idx ) == kind ) ) 00084 return FrmGetObjectPtr( formP, idx ); 00085 else 00086 return NULL; 00087 }
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Returns the kind of a form object specified by pointer if it is of the specified kind. If the object exists but is of the wrong kind, NULL is returned. Definition at line 89 of file MoreForm.c. 00091 { 00092 FrmObjectIdx_t idx = FrmGetObjectIndexFromPtr( formP, _validate_object_ptr( ptr ) ); 00093 _validate_object_idx( formP, idx ); 00094 if ( ( idx != frmInvalidObjectId ) && ( FrmGetObjectType( formP, idx ) == kind ) ) 00095 return FrmGetObjectPtr( formP, idx ); 00096 else 00097 return NULL; 00098 }
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Returns the kind of a form object specified by id.
Definition at line 102 of file MoreForm.c. 00103 { 00104 _validate_object_id( formP, id ); 00105 return FrmGetObjectType( formP, _validate_object_idx( formP, 00106 FrmGetObjectIndex( formP, id ) ) ); 00107 }
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Returns the kind of a form object specified by index.
Definition at line 109 of file MoreForm.c. 00110 { 00111 _validate_object_idx( formP, idx ); 00112 return FrmGetObjectType( formP, idx ); 00113 }
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Returns the kind of a form object specified by pointer.
Definition at line 115 of file MoreForm.c. 00116 {
00117 return FrmGetObjectType( formP, FrmGetObjectIndexFromPtr( formP, objectP ) );
00118 }
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Call in response to a form open event to do initial setup of the form, such as loading it into memory and setting its event callback. Frequently, applications have a long switch statement where they pick an event handler out of the list, then do this initialization at the bottom of the switch. By putting this in a procedure you call instead, you can more easily pass through events refering to forms that aren't yours. Definition at line 24 of file MoreForm.c. 00026 { 00027 FormType* formP = FrmInitForm( formID ); 00028 FrmSetActiveForm( formP ); 00029 FrmSetEventHandler( formP, handler ); 00030 }
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Call to display a modal dialog and wait for a response.
Definition at line 34 of file MoreForm.c. 00036 { 00037 FormType* previousFormP = FrmGetActiveForm( ); 00038 FormType* dialogP = FrmInitForm( formID ); 00039 UInt16 button; 00040 FrmSetActiveForm( dialogP ); 00041 if ( handler ) 00042 { 00043 FrmSetEventHandler( dialogP, handler ); 00044 }; 00045 FrmPopupForm( formID ); 00046 button = FrmDoDialog( dialogP ); 00047 FrmReturnToForm( previousFormP ? FrmGetFormId( previousFormP ) : 0 ); 00048 return button; 00049 }
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Relative reposition of form object by id. Moves a form object (specified by id) the distance specified. Optionally forces redraw of the object. Definition at line 173 of file MoreForm.c. 00175 { 00176 _validate_object_id( formP, id ); 00177 MFrmNudgeObjXYByIdx( formP, FrmGetObjectIndex( formP, id ), 00178 deltaX, deltaY, redraw ); 00179 }
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Relative reposition of form object by index. Moves a form object (specified by index) the distance specified. Optionally forces redraw of the object. Definition at line 181 of file MoreForm.c. 00183 { 00184 Coord x, y; 00185 _validate_object_idx( formP, idx ); 00186 00187 FrmGetObjectPosition( formP, idx, &x, &y ); 00188 00189 if ( redraw ) 00190 { 00191 FrmHideObject( formP, idx ); 00192 } 00193 00194 FrmSetObjectPosition( formP, idx, x + deltaX, y + deltaY ); 00195 00196 if ( redraw ) 00197 { 00198 FrmShowObject( formP, idx ); 00199 } 00200 }
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Relative reposition of form object by pointer. Moves a form object (specified by pointer) the distance specified. Optionally forces redraw of the object. Definition at line 202 of file MoreForm.c. 00204 { 00205 _validate_object_ptr( objectP ); 00206 MFrmNudgeObjXYByIdx( formP, FrmGetObjectIndexFromPtr( formP, objectP ), 00207 deltaX, deltaY, redraw ); 00208 }
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Forces the current form to reload. Causes the current form to be reloaded, including all events for the form. Do not use this with dialogs! Definition at line 151 of file MoreForm.c. 00152 { 00153 FrmGotoForm( FrmGetActiveFormID( ) ); 00154 }
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Sets focus to a field based on object id. A convenience function; FrmSetFocus requires an object index, but often you want to specify it with an id instead. Definition at line 158 of file MoreForm.c. 00159 { 00160 _validate_object_id( formP, objectId ); 00161 FrmSetFocus( formP, FrmGetObjectIndex( formP, objectId ) ); 00162 }
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Sets focus to a field based on object pointer. A convenience function; FrmSetFocus requires an object index, but often you want to specify it with a pointer instead. Definition at line 164 of file MoreForm.c. 00165 { 00166 _validate_form_ptr( formP ); 00167 _validate_object_ptr( objectP ); 00168 FrmSetFocus( formP, FrmGetObjectIndexFromPtr( formP, objectP ) ); 00169 }
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Hides an object by form and object id. Shows or hides an object based on its form, object id and a visibility flag. Applications usually reference form objects by ID, but FrmShowObject( ) and FrmHideObject( ) only operate on object indexes. Also, it is often inconvenient to call a different function depending on whether or not you want to show or hide an object. Limitations:
Definition at line 122 of file MoreForm.c. 00124 { 00125 _validate_object_id( formP, id ); 00126 00127 MFrmSetObjVisibleByIdx( formP, FrmGetObjectIndex( formP, id ), visible ); 00128 }
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Hides an object by form and object index. Shows or hides an object based on its form, object index and a visibility flag. It is often inconvenient to call a different function depending on whether or not you want to show or hide an object. In those situations, MFrmSetObjVisibleByIdx lets you specify the new visibility with a Boolean instead of two different functions. Limitations:
Definition at line 130 of file MoreForm.c. 00132 { 00133 _validate_object_idx( formP, idx ); 00134 if ( visible ) 00135 FrmShowObject( formP, idx ); 00136 else 00137 FrmHideObject( formP, idx ); 00138 }
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Hides an object by form and object pointer. Shows or hides an object based on its form, object pointer and a visibility flag. Applications usually reference form objects by ID, or cache their pointer. However, FrmShowObject( ) and FrmHideObject( ) only work with object indexes. Also, it is often inconvenient to call a different function depending on whether or not you want to show or hide an object. MFrmSetObjVisibleByIdx lets you refer to the object using a pointer, and specify the new visibility with a Boolean instead of two different functions. Limitations:
Definition at line 140 of file MoreForm.c. 00142 { 00143 _validate_form_ptr( formP ); 00144 _validate_object_ptr( objectP ); 00145 MFrmSetObjVisibleByIdx( formP, FrmGetObjectIndexFromPtr( formP, objectP ), 00146 visible ); 00147 }
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