c:graphics.h:initwindow
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| + | ===== initwindow ===== | ||
| + | |||
| + | |||
| + | ====Syntax of initwindow ==== | ||
| + | <code c> | ||
| + | #include "graphics.h" | ||
| + | int initwindow(int width, int height, const char* title="Windows BGI", | ||
| + | int left=0, int top=0, bool dbflag=false, closeflag=true); | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Description of initwindow ==== | ||
| + | <code c> | ||
| + | The initwindow function is available in the winbgim implementation of BGI | ||
| + | graphics. You do not need to include conio.h; just include graphics.h. | ||
| + | The function initializes the graphics system by opening a graphics window | ||
| + | of the specified size. The first two parameters (width and height) are | ||
| + | required, but all other parameters have default values. | ||
| + | The title parameter is the title that will be printed at the top of the | ||
| + | window (with a default of "Windows BGI".) If this is set to the empty | ||
| + | string (no characters), then the window will be opened without a title | ||
| + | bar or border (typically used for a popup message that the user can then | ||
| + | close by clicking), and the user will not be able to move this window. If | ||
| + | you want a title bar with no visible title, then set the title to a | ||
| + | string containing one space. | ||
| + | The left and top parameters determine the screen coordinates of the left | ||
| + | and top sides of the window. | ||
| + | The dbflag parameter determines whether double-buffering for the window | ||
| + | is automatically turned on as described in the swapbuffers function (true | ||
| + | means that double-buffering will be turned on). | ||
| + | If the closeflag parameter is true, then the user can click on the | ||
| + | window's close button to shut down the entire program. | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== Example of initwindow ==== | ||
| + | <code c> | ||
| + | /* initwindow example */ | ||
| + | #include "graphics.h" | ||
| + | |||
| + | int main(void) | ||
| + | { | ||
| + | /* initialize graphics window at 400 x 300 */ | ||
| + | initwindow(400, 300); | ||
| + | |||
| + | /* draw a line */ | ||
| + | line(0, 0, getmaxx(), getmaxy()); | ||
| + | |||
| + | /* clean up */ | ||
| + | getch(); | ||
| + | closegraph(); | ||
| + | return 0; | ||
| + | } | ||
| + | /* initwindow example with two windows */ | ||
| + | #include "graphics.h" | ||
| + | |||
| + | int main(void) | ||
| + | { | ||
| + | int wid1, wid2; | ||
| + | |||
| + | /* initialize graphics windows */ | ||
| + | wid1 = initwindow(400, 300); | ||
| + | wid2 = initwindow(300, 400, 200, 100); | ||
| + | |||
| + | /* draw lines */ | ||
| + | setcurrentwindow(wid1); | ||
| + | line(0, 0, getmaxx(), getmaxy()); | ||
| + | setcurrentwindow(wid2); | ||
| + | line(0, 0, getmaxx(), getmaxy()); | ||
| + | |||
| + | /* clean up */ | ||
| + | getch(); | ||
| + | closegraph(); | ||
| + | return 0; | ||
| + | } | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ==== See also ==== | ||
| + | [[closegraph]] | ||
| + | [[getcurrentwindow]] | ||
| + | [[getmaxheight]] | ||
| + | [[getmaxwidth]] | ||
| + | [[initgraph]] | ||
| + | [[setcurrentwindow]] | ||
| + | [[swapbuffers]] | ||
| + | |||
| + | |||
| + | ===== output of initwindow example ===== | ||
| + | |||
| + | no output of example at the moment | ||
| + | do not hesitate and add it... | ||
| + | |||
| + | |||
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c/graphics.h/initwindow.txt · Last modified: 2024/02/16 01:05 (external edit)
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