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2 INTUITION 2.1 SCREENS Example1 This program will open a low-resolution, non-Interlaced, eight colour Custom Screen. It will display it for 30 seconds, and then close it. Example2 Same as Example1 except that the screen will be a high- resolution, Interlaced, 4 colour Custom Screen. Example3 Same as Example1 except that we will use the TOPAZ_SIXTY Italic style as default font. (See chapter 3 GRAPHICS for more information about text styles.) Example4 This program will open two screens, one (low-resolution 32 colours) at the top of the display, and one (high-resolution 16 colours) a bit down. Example5 Same as Example4 except that after 10 seconds the low- resolution screen will move down 75 lines. After another 10 seconds it will be put in front of all other screens. 10 seconds later it will move down another 75 lines. The program will wait 10 seconds before the screens are closed and the program exits. Example6 This program will open a low-resolution, non-Interlaced, 4 colour Custom Screen. It will after 5 seconds start to change the screens colours, and will after a while close the screen and exit. 2.2 WINDOWS Example1 This program will open a normal window which is connected to the Workbench Screen. It will display it for 30 seconds, and then close it. Example2 This program will open a high resolution 16 colour Custom Screen and a normal window which is connected to it. It will display it for 30 seconds, and then close the Custom Screen and the window. Example3 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will automatically Activate the window. It will display it for 30 seconds, and then close it. (Remember that the Close Gadget does NOT close the window by itself, it will only inform you that the user wants to close it. But in this example we will not listen to what the user wants.) Example4 This program will open two normal windows which are connected to the Workbench Screen. The windows will use all System Gadgets. It will display them for 30 seconds, and then close them. Example5 This program will open a Borderless window which is connected to the Workbench Screen. It will display it for 30 seconds, and then quit. Example6 Same as Example5 except that the window will also use all System Gadgets. Example7 This program will open three windows, two are normal and the third is a Backdrop window. The windows will use all System Gadgets, except the Backdrop window, which only can use the close-window gadget. After 30 seconds the program quits. (Try to push either window 1 or 2 behind the Backdrop window.) Example8 This program will open a SuperBitMap window which is connected to the Workbench Screen. Since it is a SuperBitMap we also make the window into a Gimmezerozero window. The window will use all System Gadgets, and some boxes will be drawn. It will display the window for 30 seconds, and then close it. (Shrink the window, and then enlarge it again, and you will noticed that the lines are still there!) Example9 This program will open a normal window with all system gadgets connected to it. If you activate the window, the pointer will change shapes into a "nice" arrow. Example10 This program will open a two normal windows with all system gadgets connected to them. If the first window is Activated, the pointer will change shapes into a Zzz symbol, if the second window is activated, the pointer will look like a pistol. 2.3 GRAPHICS Example1 This program will open a normal window which is connected to the Workbench Screen. We will then draw a strange line with help of Intuition's Border structure. Example2 This program will open a normal window which is connected to the Workbench Screen. We will then draw two rectangles with different colours. This shows how you can link Border structures to each other in order to get the desired effects. Example3 This program will open a normal window which is connected to the Workbench Screen. We will then print a text string with help of Intuition's IntuiText structure. Example4 Same as Example3 except that the text will be printed with underlined italic characters. Example5 This program will open a normal window which is connected to the Workbench Screen. We will then draw the little nice arrow we talked so much about. Example6 Same as Example5 except that we will draw it several times in different colours. This shows how PlanePick/PlaneOnOff works. Example7 This program will open a normal window which is connected to the Workbench Screen. We will then draw the nice 4 colour face that was described in chapter 3.5 IMAGES. Example8 This program will open a normal window which is connected to a 16-colour Custom screen. In the window we will draw the famous AMIGA-logo. 2.4 GADGETS Example1 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. (Same as Example3 in chapter 2 WINDOWS, except that we have added an IDCMP check on the Close window gadget.) Example2 Same as Example1 except that we have added a Boolean gadget with the text "PRESS ME". Example3 Same as Example2 except that the on/off state of the gadget is toggled each time the user hits the gadget. Example4 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have put two Boolean gadgets with the text "GADGET 1" and "GADGET 2". Example5 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have put a Boolean gadget with two Image structures connected to it. Each time the user clicks on the gadget it will change images, lamp on/lamp off. Example6 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have put a Boolean gadget with a connecting mask. The gadget will only be highlighted when the user selects this gadget while pointing inside the specified (masked) area. Example7 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have put a String gadget. Example8 Same as Example7 except that it is an Integer gadget. Example9 Same as Example7 except that it is a Proportional gadget. Example10 Same as Example9 except that the Proportional gadget uses a custom image knob. Example11 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have put a Proportional gadget where the knob can be moved both horizontally and vertically. Example12 This program will open a SuperBitmap window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have put two Proportional gadgets, one on the right side, and one at the bottom. With help of these two gadgets, the user can move around the BitMap. This example is for experienced programmers only, since it uses some functions etc which we have not discussed yet. I have, however, included it here since it is a good example on how you can combine Proportional gadgets with SuperBitmap windows. Example13 This example demonstrates how to use six string gadgets which are automatically activated (selected) when the user release the gadget above. 2.5 REQUESTERS Example1 This example opens a Simple requester by calling the function AutoRequest. It displays a message "This is a very simple requester!", and has only one gadget connected to it (on the right side of the requester) with the text "OK". Example2 Same as Example1, except that the requester displays a message "Do you really want to quit?", and allows the user to choose between "Yes" and "No". The program will continue to reopen the requester until the user has chosen "Yes". Example3 Same as Example1, except that this requester displays a message "Insert a disk in any drive!", and allows the user to choose between "Yes" and "No". The program will continue to reopen the requester until the user has chosen "Yes" or inserted a disk. Example4 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have activated an Application requester with a connecting gadget. The requester will first be satisfied when the user has selected the gadget, and will then be deactivated. The window can now be closed. Example5 Same as Example4, except that the requester is first activated when the user double-clicks on the right mouse button. This example shows how to create a Double-menu requester, and how to monitor the IDCMP flags REQSET and REQCLEAR. Example6 Same as Example5, except that whenever the user double- clicks on the right mouse button, we will receive a REQVERIFY message, and first when we have replied, will the requester be activated. This example shows how to use the REQVERIFY flag. Example7 This program will open a normal window which is connected to the Workbench Screen. The window will use all System Gadgets, and will close first when the user has selected the System gadget Close window. Inside the window we have activated an Application requester with three connecting gadgets. Two are Boolean gadgets ("OK and "CANCEL"), and one is a String gadget. Example8 Same as Example7, except that it is an Integer gadget. Example9 Same as Example8, except that it is a Proportional gadget. Example 10 This example demonstrates how you use a requester with a predrawn bitmap. This is very useful when you want colourful and catching requesters. The advantage with a special bitmap is that if the window which the requester is tied to is resized, the drawing will not be destroied. The graphics data is stored in a separate file called "Example10Graphics.c". Both this and the graphical file should be compiled separately, then linked together. If you have a SAS (Lattice) C Compiler you would do like this: lc Example10.c lc Example10Graphics.c blink with Example10.lnk This program will NOT try to erase the disk! It is ony a demonstration how to use a requester. 2.6 ALERTS Example1 This example displays an Alert message at the top of the display. 2.7 MENUS Example1 This program opens a normal window to which we connect a menu strip. The menu consists of four items: Plain, Bold, Underlined and Italic. The user can select either Plain or a combination of the other styles. (If the user selects Plain all other modes will be mutual excluded, but if the user on the other hand selects Bold, Underlined or Italic, only the Plain option will be mutual excluded. This example also shows how a program should handle the IDCMP flags, and how to collect several messages from one single menu event. Example2 This example is very similar to Example1, but we have this time put the edit styles in a subitem box which is connected to the one and only item box called "Style". Example3 This example is very similar to Example2, but the user can this time also access the subitems from the keyboard. For example, to select Bold the user only needs to press the right Amiga key [A] together with the "B" key. Example4 This program opens a normal window to which we connect a menu strip. The menu consists of two items: Readmode and Editmode. The readmode item is selected and ghosted, and when the user selects the editmode item, it will become disabled (ghosted) while the readmode item will be enabled (not ghosted). This means that if the program is in "readmode", the user should only be able to chose the "editmode", and v.v. The purpose with this program is to show how you can use the OnMenu and OffMenu functions in order to make an "user-friendly interface". Example5 Exactly as Example1 except that we have changed Intuition's checkmark to our own customized "arrow". Example6 This program opens a normal window to which we connect a menu strip. The menu consists of six small dices which are all action items. This example shows how you can use Images inside a menu. Example7 This program opens a normal window to which we connect a menu strip. The menu consists of one small action item with two images. Example8 Same as Example1 except that we this time will verify any menu operations. If the user tries to activate this program's menu we check if the position of the pointer is somewhere at the top of the window (less than 10 lines down). In that case the menu operation will continue as normal, otherwise we cancel the menu operation. 2.8 IDCMP Example1 This program explains how to use the IDCMP flag MOUSEBUTTONS. Example2 This program explains how to use the IDCMP flag MOUSEMOVE. Example3 This program explains how to use the IDCMP flags: NEWSIZE, ACTIVEWINDOW and INACTIVEWINDOW. Example4 This program explains how to use the IDCMP flag SIZEVERIFY. Example5 This program explains how to use the IDCMP flag RAWKEY. Example6 This program explains how to use the IDCMP flag VANILLAKEY. Example7 This program explains how to use the IDCMP flags: DISKINSERTED and DISKREMOVED. Example8 This program explains how to use the IDCMP flag INTUITICKS. Example9 This program explains how to use the IDCMP flag REFRESHWINDOW, and how to optimize the redrawing of the window. 2.9 MISCELLANEOUS Example1 This example shows how to allocate, and deallocate memory. Example2 This example shows how to allocate and deallocate memory with help of the functions AllocRemember(), and FreeRemember(). Example3 This example shows how to get a copy of the preferences. Example4 This example shows how to handle double mouse button events. Example5 This example prints out the current time.